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US6038233A - Translator for IP networks, network system using the translator, and IP network coupling method therefor - Google Patents

Translator for IP networks, network system using the translator, and IP network coupling method therefor Download PDF

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Publication number
US6038233A
US6038233A US08887123 US88712397A US6038233A US 6038233 A US6038233 A US 6038233A US 08887123 US08887123 US 08887123 US 88712397 A US88712397 A US 88712397A US 6038233 A US6038233 A US 6038233A
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Prior art keywords
address
ip
packet
network
translation
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US08887123
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Shinichi Hamamoto
Ken Watanabe
Kazuaki Tsuchiya
Naoya Ikeda
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Hitachi Ltd
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Hitachi Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/12Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents characterised by the data terminal contains provisionally no documents
    • H04L29/12009Arrangements for addressing and naming in data networks
    • H04L29/1233Mapping of addresses of the same type; Address translation
    • H04L29/12339Internet Protocol [IP] address translation
    • H04L29/12349Translating between special types of IP addresses
    • H04L29/12358Translating between special types of IP addresses between different IP versions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/12Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents characterised by the data terminal contains provisionally no documents
    • H04L29/12009Arrangements for addressing and naming in data networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/25Network arrangements or network protocols for addressing or naming mapping of addresses of the same type; address translation
    • H04L61/2503Internet protocol [IP] address translation
    • H04L61/2507Internet protocol [IP] address translation translating between special types of IP addresses
    • H04L61/251Internet protocol [IP] address translation translating between special types of IP addresses between different IP versions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Application independent communication protocol aspects or techniques in packet data networks
    • H04L69/16Transmission control protocol/internet protocol [TCP/IP] or user datagram protocol [UDP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Application independent communication protocol aspects or techniques in packet data networks
    • H04L69/16Transmission control protocol/internet protocol [TCP/IP] or user datagram protocol [UDP]
    • H04L69/167Transitional provisions between IPv4 and IPv6
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Application independent communication protocol aspects or techniques in packet data networks
    • H04L69/08Protocols for interworking or protocol conversion

Abstract

A translator for coupling a first network such as an internet protocol version 4 (IPv4) and a second network such as an internet protocol version 6 (IPv6) having different addressing architectures for IP addresses due to a difference in version or the like so as not to exhaust the IP addresses of one of the two networks, a network system using the translator, and a network coupling method therefor are provided. When a packet is transferred from the IPv6 network to the IPv4 network, the translator assigns any of a plurality of previously prepared IPv4 addresses to an IPv6 address stored in a source storing field of the IPv6 packet. The assigned address is stored in a source storing field of an IPv4 packet. A packet translation unit is provided for assigning the foregoing IPv6 address to an IPv4 address stored in a destination storing field of the IPv4 packet, when a packet is transferred from the IPv4 network to the IPv6 network, and for storing this address in a destination storing field of the IPv6 packet.

Description

BACKGROUND OF THE INVENTION

The present invention relates to an internet protocol (IP) network coupling method, a translator for IP networks, and a network system using the translator which are intended to couple a first class IP network in which a plurality of devices of interest are assigned IP addresses of a first class so as to prevent the assignment of the same IP address to different devices and a second class IP network in which a plurality of devices of interest are assigned IP addresses of a second class so as to prevent the assignment of the same IP address to different devices.

The protocol most widely known at present as a protocol for network layers used in the TCP/IP communication is the internet protocol (IP). The IP functions to provide an addressing service for specifying a destination to be communicated with among a large number of nodes connected to a network, and so on, which are the same services provided by the third layer of OSI (Open Systems Interconnection) reference model. Currently, the IP of version 4 (hereinafter called "IPv4") is commonly used. The IPv4 specification is disclosed in "INTERNET PROTOCOL; DARPA INTERNET PROGRAM PROTOCOL SPECIFICATION", Information Science Institute University of Southern California, September, 1981. A format defined for a header used in the IPv4 (hereinafter called "IPv4 header") is as shown in FIG. 11B.

In the IPv4 header, a "version" field stores the version number, i.e., "4". A "header length" field stores the length of the IPv4 header itself. A "service type" field stores information indicative of a service quality of communication processing. A "packet length" field stores the size of an entire packet which includes a data block treated by the IP and the IPv4 header. Information directed down from an upper layer is treated as a single data block in the IP, and the data block is appended with an IPv4 header in the IP and then sent to a lower layer. Conversely, an IPv4 header included in a packet sent from a lower layer is analyzed by the IP, and a data portion of the packet is sent up to an upper layer depending on the analysis results. An "identifier" field stores an identifier used as reference information when data is passed to an upper layer. A "flag" field stores control information associated with fragmentation of a packet. A "fragment offset" field stores information indicating where fragmented data (fragment) has been positioned in original data. A "time to live" field stores a time during which an associated packet is allowed to exist in a network. A "protocol" field stores information indicating which protocol an upper layer employs. A "header checksum" field stores a checksum for the IP header. A "source IP address" field stores the IP address of a source. A "destination IP address" field stores the IP address of a destination. The IP addresses are assigned to respective nodes connected to a network, and are set respectively to unique values in the network.

While the IP having the specification as mentioned above is currently spreading rapidly over a variety of communication services together with the increasing popularization of the internet, the IP is confronted with a grave problem of an exhausted supply of IP addresses.

As countermeasures for solving this problem, the IP of version 6 (hereinafter called "IPv6") has been proposed at present. The IPv6 specification is disclosed in S. Deering "INTERNET PROTOCOL: Version 6 (IPv6)", Xerox, PARC, December 1981.

A format defined for a header used in the IPv6 (hereinafter called "IPv6 header") is as shown in FIG. 11A. In the IPv6 header, a "version" field stores the version number, i.e., "6". A "priority" field stores the priority of processing executed by a router in a network for relaying a packet. A "flow label" field is used to store an identifier for performing a priority control or the like. A "payload length" field stores the length of a data portion calculated by subtracting an IPv6 header portion from a packet. A "next header identifier" field stores an identifier for identifying which header of upper layer protocol, or which IPv6 extended header follows the IPv6 header. A "hop limit" field stores a maximum number of times of transfers for an associated packet. A "source IP address" field stores the IP address of a source, and a "destination IP address" field stores the IP address of a destination. Additionally, in the IPv6 header, the "source IP address" field and the "destination IP address" field are respectively extended from 32 bits to 128 bits. The extended address fields enable an increased number of nodes to be connected to a network.

Although the IPv6 has extended fields for storing the IP addresses, additional modifications partially added to the header and associated processing give rise to another problem that the IPv6 is not compatible with the existing IPv4.

From now on, the IPv6 will be implemented as the network protocol in nodes newly connected to a network, so that addresses conforming to the IPv6 will be assigned to these nodes as their network addresses. However, since simultaneous replacement of the previous network protocol with the IPv6 in all existing nodes is actually impossible, it is anticipated that coexistence of IPv4 nodes and IPv6 nodes will last for a long time. In addition, a portion of existing nodes (particularly peripherals), for which the replacement of the protocol is difficult, will continue to use the IPv4 as before.

It is therefore anticipated that nodes having the IPv6 implemented therein (IPv6 nodes) and nodes having the IPv4 implemented therein (IPv4 nodes) will co-exist in a single network in future.

However, since the IPv6 and the IPv4 employ different header formats and so on from each other, IPv6 nodes and IPv4 nodes cannot be simply coupled.

As a solution for this problem, a connecting method using a translator has been proposed, for example, as illustrated in FIG. 13.

Referring specifically to FIG. 13, an IPv6 network 52 to which an IPv6 node (IPv6 host) 10 is connected and an IPv4 network 54 to which an IPv4 node (IPv4 host) 20 is connected are mutually connected through a translator 30. The IPv4 host 20 is designated an address uniquely assigned in the IPv4 network 54 (hereinafter called "IPv4 address"), while the IPv6 host 10 is designated both of an address uniquely assigned in the IPv6 network 52 (hereinafter called "IPv6 address") and an IPv4 address. The IPv6 host 10 represents itself with the IPv6 address when communicating with another IPv6 host (not shown) in the IPv6 network 52, and represents itself with an IPv4 address when communicating with the IPv4 host 20 in the IPv4 network 54. For example, for sending a packet from the IPv6 host 10 to the IPv4 host 20, the IPv6 host 10 stores its own IPv4 address (of the IPv6 host 10) in the "source IP address" field (see FIG. 11A) in a form as shown in FIG. 12A, and stores the IPv4 address of the destination (the IPv4 host 20) in the "destination IP address" field (see FIG. 11A) in a form as shown in FIG. 12B, when generating a header for the packet to be sent. In FIG. 12A, the lower 32 bits within the 128 bits reserved for the "IP address" field are used for storing address information with the remaining bits being set at "0". The address represented in such a format is commonly called an "IPv4-compatible-IPv6 address". In FIG. 12B, in turn, the lower 32 bits within the 128 bits reserved for the "IP address" field are used for storing address information, with 47th to 32nd bits being set at "1" and the remaining bits being set at "0". The address represented in such a format is commonly called an "IPv4-mapped-IPv6 address". Then, the header containing predetermined information and data to be sent is forwarded to the translator 30 as a single packet.

The translator 30 translates the packet sent thereto into a packet for the IPv4 network 54. Specifically, the lower 32 bits, i.e., the IPv4 address of the IPv6 host 10 is retrieved from the foregoing IPv4-compatible-IPv6 address included in the header of the sent packet, and stored in the "source IP address field" of the IPv4 header shown in FIG. 11B. Simultaneously, the lower 32 bits, i.e., the IPv4 address of the source IPv4 host 20 are retrieved from the foregoing IPv4-mapped-IPv6 address included in the header of the sent packet, and stored in the "destination IP address" field of the IPv4 header shown in FIG. 11B. Subsequently, other necessary items are set in the header, and the header is sent together with the data to be sent to the IPv4 host 20 as a single packet.

The use of the foregoing method does enable an IPv6 node to interconnect with an IPv4 node. This method, however, needs to additionally assign an IPv4 address to an IPv6 node, thus causing a contradiction. The IPv6 addresses were introduced because an available number of IPv4 addresses had been lacking as mentioned above. Thus, if the IPv6 addresses intended to overcome this problem promoted the exhaustion of the IPv4 addresses by contraries, it would be meaningless to employ the IPv6 addresses.

SUMMARY OF THE INVENTION

In view of the problem described above, it is an object of the present invention to provide an IP network coupling method, a translator for IP networks, and a network system using the translator which are capable of coupling two networks which employ different addressing architectures for IP addresses, due to a difference in IP version or the like, without exhausting IP addresses used in either of the two networks.

According to one aspect of an IP network coupling method of the present invention to achieve the above object, there is provided a method of coupling IP networks for mutually coupling through a translator a first IP network, wherein a plurality of devices of interest are assigned first IP addresses such that the same first IP address is not assigned to two or more devices of interest, and a second IP network, wherein a plurality of devices of interest are assigned second IP addresses such that the same second IP address is not assigned to two or more devices of interest, the method comprising the steps of:

when initiating a communication between a first device of interest which is one of a plurality of devices of interest existing in the first IP network and a second device of interest which is one of a plurality of devices of interest existing in the second IP network, assigning any of a plurality of previously prepared first IP addresses to a second IP address assigned to the second device of interest;

communicating between the second device of interest and the translator using the second IP address assigned to the second device of interest, and communicating between the translator and the first device of interest using the assigned first IP address; and

releasing the assigned first IP address after termination of the communication.

According to one aspect of an IP network translator of the present invention to achieve the above object, there is provided a translator for coupling a first IP network, wherein a plurality of devices of interest are assigned first IP addresses such that the same first IP address is not assigned to two or more devices of interest, and a second IP network, wherein a plurality of devices of interest are assigned second IP addresses such that the same second IP address is not assigned to two or more devices of interest, the translator comprising:

a header translator which translates a header between a first IP packet used in the first IP network and a second IP packet used in the second IP network in order to exchange information between the first IP network and the second IP network; and

a storage which stores a plurality of first IP addresses different from each other;

wherein, for a header translation performed to send information from the second IP network to the first IP network, any of the plurality of first IP addresses stored in the storage is assigned to a second IP address stored in a source storing field included in an IP header of the second IP packet, and the assigned first IP address is stored in a source storing field included in an IP header of the first IP packet; and

for a header translation performed to send information from the first IP network to the second IP network, the second IP address stored in the source storing field included in the IP header of the second IP packet is assigned to a first IP address stored in a destination storing field included in the IP header of the first IP packet, and the assigned second IP address is stored in a destination storing field included in the IP header of the second IP packet.

According to another aspect of the IP network translator of the present invention to achieve the above object, there is provided a network system comprising:

a translator for mutually coupling a first IP network, wherein a plurality of devices of interest are assigned first IP addresses such that the same first IP address is not assigned to two or more devices of interest, and a second IP network, wherein a plurality of devices of interest are assigned second IP addresses such that the same second IP address is not assigned to two or more devices of interest; and

a first device A of interest which is one of the plurality of devices of interest existing in the first IP network,

said first device A of interest comprising:

a storage which stores a plurality of first IP addresses which are different from each other;

an address translator which is operative when a first IP packet including data to be transmitted to a second device B of interest to the first network, the second device B of interest being one of a plurality of devices of interest existing in the second IP network, to assign any of the plurality of first IP addresses stored in the storage to a second IP address assigned to the second device B of interest, and store the assigned first IP address to a destination storing field included in an IP header of the first IP packet; and

a sender which sends address translation information including at least the second IP address assigned to the second device B of interest and the first IP address assigned to the second IP address, and

said translator comprising:

a storage which stores the address translation information sent from the first device A of interest; and

a packet translator which translates a packet between the first IP network and the second IP network using the address translation information.

Other objects, features and advantages of the present invention will become apparent from reading the following description of the embodiments of the invention taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram illustrating an example of a network to which the present invention is applied;

FIG. 2 is a block diagram illustrating functions of an IPv4/IPv6 translator for use in the network of FIG. 1;

FIG. 3A is an explanatory diagram illustrating the concept of processing performed in an IPv4 host of type A connected to the network of FIG. 1;

FIG. 3B is an explanatory diagram illustrating the concept of processing performed in an IPv4 host of type B connected to the network of FIG. 1;

FIG. 3C is an explanatory diagram illustrating the concept of processing performed in an IPv4 host of type C connected to the network of FIG. 1;

FIG. 4 is a block diagram illustrating functions of the IPv4 host of type A connected to the network of FIG. 1;

FIG. 5 is a flow chart representing a communication procedure (No. 1) applied to communications between an IPv6 host and an IPv4 host in the network of FIG. 1;

FIG. 6 is a flow chart representing a communication procedure (No. 2) applied to communications between an IPv6 host and an IPv4 host in the network of FIG. 1;

FIG. 7 is an explanatory diagram showing an example of an address translation information table provided in each of the IPv4 hosts of types A, B and the IPv4/IPV6 translator connected to the network of FIG. 1;

FIG. 8 is an explanatory diagram showing a format for a packet used to transmit information stored in the address translation information table of FIG. 7;

FIG. 9 is a schematic diagram illustrating another example of a network to which the present invention is applied;

FIG. 10A is a schematic diagram illustrating an exemplary hardware configuration of the IPv4/IPv6 translator connected to a network to which the present invention is applied;

FIG. 10B is a schematic diagram illustrating an exemplary hardware configuration of the IPv4 host connected to a network to which the present invention is applied;

FIG. 11A is an explanatory diagram of a format for an IPv6 header;

FIG. 11B is an explanatory diagram of a format for an IPv4 header;

FIG. 12A is an explanatory diagram of a format for an IPv4-compatible-IPv6 address;

FIG. 12B is an explanatory diagram of a format for an IPv4-mapped-IPv6 address; and

FIG. 13 is an explanatory diagram illustrating a conventional scheme for connecting an IPv4 network and an IPv6 network.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Embodiments of the present invention will hereinafter be described with reference to the accompanying drawings.

As illustrated in FIG. 1, an embodiment of the present invention assumes an environment which allows coexistence of an IPv6 network 52 to which a plurality of IPv6 hosts 51 are connected and an IPv4 network 54 in which a plurality of IPv4 hosts 53 are connected, where these networks are interconnected through an IPv6/IPv4 translator 55 (hereinafter called "translator 55"). In the IPv6 network 52, a data is transferred through a packet having the IPv6 header shown in FIG. 11A (hereinafter called "IPv6 packet"). In the header of the IPv6 packet, an IPv6 host 51 is represented by a normal IPv6 address, while an IPv4 host 53 is represented by an IPv4-mapped-IPv6 address (FIG. 12B). In the IPv4 network 54, a data is transferred through a packet having the IPv4 header shown in FIG. 11B (hereinafter called "IPv4 packet"). In the header of the IPv4 packet, the translator 55 is represented by an IPv4 address assigned by the translator 55 itself or by a particular IPv4 host 53, and each IPv4 host 53 is represented by a normal IPv4 address.

The translator 55, as illustrated in FIG. 2, comprises an IPv4/v6 reception processing unit 31 for sequentially fetching IPv6 packets flowing into the IPv6 network 52 and IPv4 packets flowing into the IPv4 network 54; a header translation unit 33 for translating the header of a packet fetched by the IPv4/v6 reception processing unit 31 based on address translation information stored in an address translation information table 35 and for updating the contents of the address translation information table 35 as required; an IPv4/v6 transmission processing unit 32 for sending a packet having a translated header to a network which is the destination of the packet; and an address translation information exchange unit 34 for exchanging the address translation information stored in the address translation information table 35 with address translation information stored in a particular node connected to the IPv4 network 54.

In this embodiment, there are three types (hereinafter called "type A", "type B", and "type C") of IPv4 hosts 53 connected to the IPv4 network 54. An IPv4 host 53 of type A is a host which allows for installation of application programs used in IPv6 hosts 51 (hereinafter called "IPv6 application programs") and has the aforementioned address translation information. A concept of processing performed by the IPv4 host 53 of type A is illustrated in FIG. 3A. An IPv4 host 53 of type C is a conventional host which has installed therein application programs used in IPv4 hosts 53 (hereinafter called "IPv4 application programs") as they are, and peripheral devices such as a printer fall under this type. A concept of processing performed by the IPv4 host 53 of type C is as illustrated in FIG. 3C. An IPv4 host 53 of type B is a host which has installed therein IPv4 applications and has the aforementioned address translation information. A concept of processing performed thereby is as illustrated in FIG. 3B. It should be noted that the particular node with which the translator 55 exchanges the address translation information is the IPv4 host 53 of type A or type B.

TCP/IPv4 processing 81 shown in FIG. 3A corresponds to general TCP/IP communication processing which provides services in conformity to the IPv4 in this embodiment. The TCP/IPv4 processing 81 employs a socket interface (IPv4 socket IF) as an interface with processing performed at a higher level. IPv6 application processing 84 is processing performed by an IPv6 application and employs a socket interface (IPv6 socket IF) as an interface with processing performed at a lower level, similarly to the TCP/IPv4 processing 81. Address translation processing 82 and address translation information exchange processing 83 respectively interpose between the IPv4 socket IF and the IPv6 socket IF. In the address translation processing 82, a data transfer including address translation processing is performed, while in the address translation information exchange processing 83, the address translation information is exchanged between another node (for example, the translator 55) and the IPv4 host 53.

FIG. 4 illustrates the internal configuration of the IPv4 host 53 of type A.

A TCP/IPv4 reception processing unit 41 and a TCP/IPv4 transmission processing unit 42 are in charge of the TCP/IP processing 81. An address translation processing unit 43 is in charge of the address translation processing 82. An address translation information exchange processing unit 44 is in charge of the address translation information exchange processing 83. In addition, the IPv4 host 53 of type A is provided with an address translation information table 45.

Next, description is made of a packet exchange performed between the IPv6 host 51 and the IPv4 host 53 of type A.

First, the packet exchange originated by a communication from the IPv6 host 51 is described with reference co a flow chart of FIG. 5. Assume in this embodiment that an IPv6 address "::1234:5678:9abc" has been previously assigned to a source IPv6 host 51, and an IPv4 address "133.144.95.22" has been assigned to a destination IPv4 host 53.

The notation of the IPv4 address is defined in accordance with the following rule:

1. the address is delimited every eight bits by a period (".") and values in respective eight bit areas are represented in decimal.

Example: 123.3.2.1

The notation of the IPv6 address is defined in accordance with the following rules:

1. the address is delimited every 16 bits by a colon (":") and values in respective 16-bit areas are represented in hexadecimal;

Example: 1234:5678:9abc:def0:0fed:cba9:8765:4321

2. when 16 bits in a delimited area are all zeros, this situation may be represented by "::";

Example: 1234::9abc:def0:0fed:cba9:8765:4321

3. when 16 bits in successive delimited areas are all zeros, this situation may be represented by a single "::";

Example: 1234::4321

4. when an IPv4 address is included in the lower 32 bits, the IPv4 address notation may be used for the lower 32 bits.

Example: ::ffff:133.144.95.22

Then, when the IPv6 host 51 sends the IPv6 packet 56 to the IPv6 network 52 (a1), the IPv6 host 51 sets its own IPv6 address "::1234:5678:9abc" as the source IP address, and the IPv4-mapped-IPv6 address of the IPv4 host 53 "::ffff:133.144.95.22" as the destination IP address in the header of the IPv6 packet 56.

The IPv4/v6 reception processing unit 31 of the translator 55 sequentially fetches IPv6 packets following through the IPv6 network 52, and determines, every time an IPv6 packet is fetched, whether or not the fetched IPv6 packet has an IPv4-mapped-IPv6 address stored in the "destination IP address" (specifically, a packet with the "destination IP address" field having 47th to 32nd bits set at "1" and all bits higher than them set at "0"). If the specified packet is found, this packet is sent to the header translation unit 33 (b1). The header translation unit 33, upon receiving the packet, extracts the IPv6 address, which is the source IP address, included in the packet, and searches for an IPv4 address which has previously corresponded to the extracted IPv6 address from the address translation information table 35 (b2). If the required IPv4 address does not exist in the address translation information table 35, the header translation unit 33 assigns a certain IPv4 address to the above-mentioned IPv6 address. In this case, an IPv4 address "192.168.10.3" is assigned to the IPv6 address "::1234:5678:9abc" (b3). The address translation information exchange unit 34 transmits the corresponding relationship between these addresses to the IPv4 host 53 as address translation information (b4). A format for a packet used to exchange the address translation information is as shown in FIG. 8. In this embodiment, "::1234:5678:9abc" is stored in an "IPv6 address" field 101, and "192.168.10.3" is stored in an "assigned IPv4 address" field 102. An "option" field 103 shown in FIG. 8 can store a variety of control information required for communications, though not used specifically in this embodiment. It should be noted that the transmission of the address translation information at (b4) is performed not only to the IPv4 host 53 specified as a communication party but also all IPv4 hosts 53 having the address translation information table 45. Also, the header translation unit 33 stores the address translation information in the address translation information table (b5).

An exemplary structure of the address translation information table 35 is shown in FIG. 7. The shown address translation information table 35 is composed of an IPv6 address storing field 91; an assigned IPv4 address storing field 92; and optional storing field 93, which are filled in succession on a line-by-line basis. A plurality of IPv4 addresses to be assigned have previously been prepared and stored in a memory, not shown, in the translator 55. The address translation information table 35 itself is also stored in this memory.

Since a region in which assigned IPv4 addresses are used is closed in an associated IPv4 network, no problem will occur even if the same IPv4 address is used, for example, in a plurality of different IPv4 networks connected to a single IPv6 network 52. In other words, assuming that the IPv4 network 54 is an in-house communication network of a company and the IPv6 network 52 is an external communication network connected thereto through a public line, the company can assign IPv4 addresses which may possibly be used in an IPv4 network of any other company.

Subsequently, the header translation unit 33 replaces the source IP address in the packet from the IPv6 address "::1234:5678:9abc" with the IPv4 address "192.168.10.3". For the destination IP address, the IPv4 address extracted from the lower 32 bits of the IPv6 address is used. In addition, the header translation unit 33 simultaneously executes a variety of processing for translating the IPv6 header into the IPv4 header (b6). Subsequently, the IPv4/v6 transmission processing unit 32 sends the packet subjected to the translation processing at (b6) to the IPv4 host 53. If a corresponding address is found in the search processing at (b2), the found IPv4 address is employed as the source IP address, and therefore the processing at (b3), (b4), and (b5) are skipped.

The IPv4 host 53, upon receiving the address translation information sent from the translator 55 (c1), updates the contents of the address translation information table 45 using the received address translation information (c2). This results in the contents of the address translation information table 35 in the translator 55 matching with the contents of the address translation information table 45 in the IPv4 host 53. The update of the contents of the address translation information table 45 is actually carried out by the address translation information exchange unit 44. The processing at (c1) and (c2) is performed not only for the IPv4 host which serves as a communication party but also for all IPv4 hosts.

Also, the IPv4 host 53, upon receiving the IPv4 packet sent from the translator 55 (c3), translates the address in the received IPv4 packet based on the updated address translation information table 45.

Specifically, the TCP/IPv4 reception processing unit 41 of the IPv4 host 53 receives the foregoing IPv4 packet flowing through the IPv4 network in accordance with TCP/IP, and passes the IPv4 packet to the address translation processing unit 43. The address translation processing unit 43, upon receiving the packet, extracts the IPv4 address "192.168.10.3", which is the source address of the packet, and searches out an IPv6 address which has corresponded to the extracted IPv4 address from the address translation information table 45. Since the contents of the address translation information table 45 have been updated at (c2), the IPv6 address "::1234:5678:9abc" is extracted here. The address translation processing unit 43 sets the IPv6 address "::1234:5678:9abc" as the source IP address in the packet, and sends this packet to the IPv6 application. Used as the destination IP address is an IPv6 address which is extended to the IPv4-mapped-IPv6 address shown in FIG. 12B from the IPv4 address. When such an address translation is performed, the IPv6 application can receive both the source IP address and the destination address in the form of the IPv6 address. Since the IPv6 application is an application program developed for the IPv6 as mentioned above, it is more convenient that a received IP address is represented in the form of the IPv6 address.

In addition, the IPv6 application may send a packet to the IPv6 host 51 as response processing. In this event, the IPv6 application sets, in a packet to be sent, an IPv6 address "::ffff:133.144.95.22" extended from its own IPv4 address "133.144.95.22" to the IPv4-mapped-IPv6 address shown in FIG. 12B, as the source IP address, and the IPv6 address "::1234:5678:9abc" of the IPv6 host 51 as the destination address. This packet is passed to the address translation processing unit 43 and undergoes an address translation which is reverse to the aforementioned one. Specifically, the address translation processing unit 43 replaces the aforementioned IPv6 address "::1234:5678:9abc" set in the packet as the destination IP address with the IPv4 address "192.168.10.3". For the source IP address, the IPv4 address extracted from the lower 32 bits of the IPv6 address is used. Subsequently, the TCP/IPv4 transmission processing unit 42 sends the packet subjected to the translation processing in the address translation processing unit 43 (IPv4 packet 57 in FIG. 1) to the translator 55 (c4).

The IPv4/v6 reception processing unit 31 of the translator 55 fetches an IPv4 packet 47 flowing through the IPv4 network 54 (b8), and passes the fetched IPv4 packet 57 to the header translation unit 33. The header translation unit 33, upon receiving the packet, extracts the IPv4 address "192.168.10.3", which is the destination IP address of the packet, and searches out an IPv6 address which has corresponded to the extracted IPv4 address from the address translation information table 35. Here, the IPv6 address "::1234:5678:9abc" is retrieved (b9). Subsequently, the header translation unit 33 sets an IPv4-mapped-IPv6 address "::ffff:133.144.95.22" of the IPv4 host 53 as the source IP address and the previously extracted IPv6 address "::1234:5678:9abc" as the destination IP address in the packet. In addition, the header translation unit 33 simultaneously executes a variety of processings for translating the IPv4 header into the IPv6 header other than the address translation as mentioned above (b10). The IPv4/IPv6 transmission processing unit 32 sends the packet subjected to the translation processing at (b10) to the IPv6 host 51 (b11). Subsequently, the IPv6 host 51 receives this packet (a2).

The foregoing IPv4 address which has corresponded to the IPv6 address may be released at the time a sequence of communications have been terminated between the IPv6 host 51 and the IPv4 host 53. Also, an entry in the address translation information table may be deleted in accordance with a command or the like issued for system management of the network. Further, the option field of the address translation information table may be used to store a time period elapsed from the time an assigned IPv4 address is not used in communication such that the assigned IPv4 address may be forcedly released when a predetermined time has expired.

Next, a packet exchange will be described with reference to a flow chart of FIG. 6 for the case a communication is started from the IPv4 host 53.

Assume herein, similarly to the foregoing, that an IPv6 address "::1234:5678:9abc" has been assigned to the IPv6 host 51, and an IPv4 address "133.144.95.22" to the IPv4 host 53. The IPv6 application of the IPv4 host 53 sets its own IPv4 address "133.144.95.22" as the source IP address and sets the IPv6 address "::1234:5678:9abc" of the IPv6 host 51 as the destination IP address in a packet to be sent. This packet is passed to the address translation processing unit 43. The address translation processing unit 43, upon receiving the packet, extracts the IPv6 address, which is the destination IP address, included in the packet, and searches out an IPv4 address which has previously corresponded to the extracted IPv6 address from the address translation information table 45 (c1). If a required IPv4 address does not exist in the address translation information table 45, the address translation processing unit 43 assigns a certain IPv4 address to the aforementioned IPv6 address. Assume herein that an IPv4 address "192.168.10.3" is assigned to the IPv6 address "::1234:5678:9abc" (c2). The address translation processing unit 43 transmits the corresponding relationship between these addresses to the translator 55 as address translation information (c3). A format for a packet used to exchange the address translation information is as shown in FIG. 8. The address translation processing unit 43 also stores the address translation information in the address translation information table 45 (c4). An exemplary structure of the address translation information table 45 is shown in FIG. 7. A plurality of IPv4 addresses to be assigned have previously been prepared and stored in a memory, not shown, in the IPv4 host 53. The address translation information table 45 itself is also stored in this memory. Subsequently, the address translation processing unit 43 replaces the IPv6 address "::1234:5678:9abc" in the packet with the IPv4 address "192.168.10.3". The source IP address is maintained as it is. In addition, the address translation processing unit 43 simultaneously executes a variety of processings for translating the IPv6 header into the IPv4 header other than the address translation as mentioned above (c5). Subsequently, the TCP/IPv4 transmission processing unit 42 sends the packet subjected to the translation processing in the address translation processing unit 43 (IPv4 packet 57 in FIG. 1) to the translator 55 (c6). If a corresponding IPv4 address is found in the search processing at (c1), this IPv4 address is employed as the source IP address, and therefore the respective processing at (c2), (c3), and (c4) are skipped.

The translator 55, upon receiving the address translation information sent from the IPv4 host 53 (c1), updates the contents of the address translation information table 35 using the received address translation information (b2). This results in the contents of the address translation information table 45 in the IPv4 host 53 matching with the contents of the address translation information table 35 in the translator 55. The update of the contents of the address translation information table 35 is actually carried out by the address translation information exchange unit 34. The transmission of the address translation information at (c3) is performed not only for the translator 55 but also for all IPv4 hosts 53 having the address translation information table 45, so that the contents of the address translation information tables 45 are updated in the respective IPv4 hosts 53. This prevents the same IPv4 address from being assigned to the respective IPv4 hosts 53 and to the translator 55.

Then, the IPv4/v6 reception processing unit 31 of the translator 55 fetches an IPv4 packet flowing through the IPv4 network 54 (b3), and passes the fetched IPv4 packet to the header translation unit 33. The header translation unit 33, upon receiving the packet, extracts the IPv4 address "192.168.10.3", which is the destination IP address of the packet, and searches out an IPv6 address corresponded to the extracted IPv4 address from the address translation information table 35. Since the contents of the address translation information table 35 have been updated at (b2), the IPv6 address "::1234:5678:9abc" is extracted here (b4). Subsequently, the header translation unit 33 sets an IPv4-mapped-IPv6 address "::ffff:133.144.95.22" of the IPv4 host 53 as the source IP address and the previously extracted IPv6 address "::1234:5678:9abc" as the destination IP address in the packet. In addition, the header translation unit 33 simultaneously executes a variety of processings for translating the IPv4 header into the IPv6 header other than the address translation as mentioned above (b5). Then, the IPv4/IPv6 transmission processing unit 32 sends the packet subjected to the translation processing at (b5) to the IPv6 host 51 (b6). Subsequently, the IPv6 host 51 receives this packet (a1).

Also, the IPv6 host 51 may send the IPv6 packet 51 to the IPv4 host 53 as application processing. In this event, the IPv6 host 51 sets its own IPv6 address "::1234:5678:9abc" as the source IP address and the "IPv4-mapped-IPv6 address "::ffff:133.144.95.22" of the IPv4 host 53 as the destination IP address in the header of the IPv6 packet 56, when sending the IPv6 packet 56 to the IPv6 network 52 (a2). This IPv6 packet 56 is sent to the IPv4 host 53 through the translator 55 (c7). Since the processing performed by the translator 55 (at (b7), (b8), (b9), (b10)) is similar to that of (b1), (b2), (b6), (b7) in FIG. 6, explanation thereof is not repeated here.

For the aforementioned IPv4 address assigned to the IPv6 address, the release processing may be performed in a manner similar to the aforementioned one.

Next, the IPv4 host 53 of type B will be described. As mentioned above, the IPv4 host 53 of type B is a host having an IPv4 application installed therein and possesses the aforementioned address translation information. The IPv4 host 53 of type B performs TCP/IPv4 processing 81, address translation processing 82, address translation information exchange processing 83, and IPv4 application processing 85, as illustrated in FIG. 3B. The IPv4 application processing 85 is executed on the TCP/IPv4 processing 81 through an IPv4 socket interface, as illustrated in FIG. 3B. The hierarchical structure of the processing is the same as that of the conventional IPv4 host 53, and in the IPv4 application processing 85, the IP address of a packet sent up from the TCP/IPv4 processing 81 is received by an IPv4 address. The TCP/IPv4 reception processing unit 41 and the TCP/IPv4 transmission processing unit 42 is in charge of the TCP/IPv4 processing 81. The address translation processing unit 43 is in charge of the address translation processing 82. The address translation information exchange processing unit 44 is in charge of the address translation information exchange processing 83.

Thus, the application side does not particularly require an IPv6 address in the IPv4 host 53 of type B. However, some users may desire to know the IPv6 address of a communication party for confirmation or the like.

For user's convenience, the IPv4 host 53 of type B outputs the IPv6 address of a communication party on a display screen or the like. Specifically, the address translation processing unit 43 of the IPv4 host 53 of type B, upon receiving a packet outputted from the IPv4 application, extracts an IPv4 address, which is the source IP address of the packet, searches out an IPv6 address corresponding to the extracted IPv4 address from the address translation information table 45, and outputs the IPv6 address on the display screen or the like.

Further, the IPv4 host 53 of type B allows the user to arbitrarily make correspondence between the IPv6 address and the IPv4 address which is automatically performed in the translator and the IPv4 host of type A. Specifically, the address translation processing unit 43 updates the address translation information table 45 in accordance with the contents of operation performed by the user. For example, if the user assigns an IPv4 address "192.168.10.3" to an IPv6 address "::1234:4567:9abc", the address translation information table 45 is set to the contents, for example, as shown in FIG. 7. After the address translation information table 45 has been updated, the address translation information exchange unit 34 creates a packet including the updated portion (see FIG. 8) and transmits the packet to other IPv4 hosts 53 which possess the address translation information tables. This results in the contents of the address translation information tables 45 in the respective IPv4 hosts 53 matching with the contents of the address translation information table 35 in the translator 55.

Since a packet exchange performed between the IPv6 host 51 and the IPv4 host 53 of type B is achieved by a processing flow similar to that described previously with reference to FIGS. 5 and 6, explanation thereof is omitted.

Next, the IPv4 host 53 of type C will be described. The IPv4 host 53 of type C is, as mentioned previously, a host which has installed therein an IPv4 application used in the IPv4 host 53 as it is. A host which has an IPv4 application implemented in the form of ROM and therefore cannot modify the IPv4 application by software without external aid is also included in the type C host 53. In the IPv4 host 53 of type C, IPv4 application processing 85 is executed on TCP/IPv4 processing 81 through an IPv4 socket interface, as illustrated in FIG. 3C. The TCP/IPv4 reception processing unit 41 and the TCP/IPv4 transmission processing unit 42 is in charge of the TCP/IPv4 processing 81.

It should be noted that although the IPv4 host 53 of type C is not allowed to initiate a communication due to its configuration, communications can be initiated from the other party to the IPv4 host 53 of type C without problems as described below.

The IPv4 application in the IPv4 host 51 of type C, upon receiving a packet outputted from the TCP/IPv4 reception processing unit 41, extracts the source IP address and the destination IP address of the received packet, and performs predetermined processing specified by a data portion of the received packet. Subsequently, the IPv4 application packs the processing results in the packet, if required, and passes the packet to the TCP/IPv4 transmission processing unit 42. In this event, the IPv4 application replaces the extracted destination IP address and source IP address with each other and sets them in the packet. For example, when an IPv4 address "133.144.95.22" is stored in the "destination IP address" field of the received packet and an IPv4 address "192.168.10.3" is stored in the "source IP address" field of the same, the IPv4 address "192.168.10.3" is stored in the "destination IP address" field and the IPv4 address "133.144.95.22" is stored in the "source IP address" field. This packet is sent to the IPv4 network 54 by the TCP/IPv4 transmission processing unit 42 to be delivered to the translator 55.

Thus, the embodiment has been described for the case where the IPv4 network and the IPv6 network are connected through the IPv4/v6 translator, where actual hardware of the IPv6/v4 translator used herein is configured, for example, as illustrated in FIG. 10A.

The IPv6/v4 translator is composed of a CPU71, a memory 72, and network interfaces 73-1, 73-2, . . . , 73-n. The CPU 71 serves to manage the memory 72 and control the network interfaces 73-1, 73-2, . . . , 73-n. The memory 72 previously stores a variety of programs which are executed by the CPU 71 as required to implement the IPv4/v6 reception processing unit 31, the IPv4/v6 transmission processing unit 32, the header translation unit 33, the address translation information exchange unit 34, and the address translation information table 35, all illustrated in FIG. 2.

It should be noted that since one each of the IPv6 network 51 and the IPV4 network 54 exist in FIG. 1, the network interface 73-1 is used for IPv6 network 52, and the network interface 73-2 is used for the IPv4 network 54, by way of example. In this case, the network interface 73-1 fetches an IPv6 packet flowing through the IPv6 network 52 and stores it in the memory 72, while the network interface 73-2 sends an IPv4 packet, produced by a header translation and so on, to the IPv4 network 54. When a packet is sent in the opposite direction, the network interfaces 73-1, 73-2 perform operations reverse to the foregoing. If a plurality of IPv6 and IPv4 networks exist, a number of network interfaces will be used corresponding to the number of networks.

Actual hardware of the IPv4 host is configured, for example, as illustrated in FIG. 10B. The IPv4 host is composed of a CPU 71, a memory 72, and a network interface 73. The CPU 71 serves to manage the memory 72 and control the network interface 73. The memory 72 previously stores a variety of programs. For example, in the IPv4 host of type A, the programs in the memory 72 are executed by the CPU 71 as required to realize the TCP/IPv4 reception processing unit 41, the TCP/IPv4 transmission processing unit 42, the address translation processing unit 43, the address translation information exchange processing unit 44, the address translation information table 45, and the IPv4 application. The network interface 73 fetches an IPv4 packet flowing through the IPv4 network 54 and stores it in the memory 72 as well as sends an IPv4 packet, produced by an address translation and so on, to the IPv4 network 54.

For a particular IPv6 host, an IPv4 address may have been previously assigned thereto and stored in the address translation information table. In this way, a processing time required to the assignment is reduced.

It will be understood that the present invention is not limited to the network configuration as illustrated in FIG. 1. For example, the present invention may also be applied to a network system which permits coexistence of an IPv4 network and an IPv6 network. FIG. 9 illustrates an IPv4/IPv6 mixed network 64 to which an IPv4 host 62 and an IPv6 host 61 are connected. While the IPv4/v6 mixed network 64 has coexistent IPv4 packets 66 and IPv6 packets 65, an IPv4/v6 translator 63 fetches these packets thereinto, performs the foregoing address translation and header translation for the fetched packets, if required, and returns the processed packets to the network. This enables the IPv4 host 62 and the translator 63 to communicate through the IPv4 packet, and the translator 63 and the IPv6 host 61 to communicate through the IPv6 packet 65.

Further, the present invention is not limited to the coupling of an IPv4 network and an IPv6 network, but may be applied to two kinds of networks (a first class IP network and a second class IP network) which are different in IP addressing architecture due to a difference in version or the like.

The software programs performing the processings for the translation as shown in FIGS. 5 and 6 may be stored in a computer-readable recording medium such as a semiconductor memory or a recording disk.

According to the present invention, at the time a communication is initiated between an device of interest A which is one of a plurality of devices of interest belonging to a first class IP network (for example, the IPv4 network) and an device of interest B which is one of a plurality of devices of interest belonging to a second class IP network (for example, the IPv6 network), a translator disposed between the first class IP network and the second class IP network or the device of interest A assigns an IP address of a first class to an IP address of a second class assigned to the device of interest B, such that the communication is carried out using this IP address of the first class in the first class IP network.

It is therefore possible to eliminate useless addressing, i.e., the previous assignment of an IP address of the first class to the device of interest B belonging to the second class IP network for communicating with the device of interest A belonging to the first class IP network, thus effectively utilizing a small number of IP addresses of the first class.

Also, the IP address of the first class assigned to the device of interest A is used only within the first class network, so that even if the same IP address is used in other external networks, any problem will not occur due to the duplicated IP address, thereby making it possible to more effectively utilize the IP addresses of the first class.

Claims (8)

What is claimed is:
1. A translator connected to a network, comprising:
a receiver which receives a packet of a first internet protocol (IP) packet sent from a host which is identified by an IP address of a first class and a packet of a second IP sent from a host which is identified by an IP address of a second class;
an IP packet translator responsive to reception of the second IP packet by said receiver, for generating a first IP packet having data included in the second IP packet, and responsive to reception of the first IP packet by said receiver, for generating a second IP packet having data included in the first IP packet;
a transmitter which transmits each of the first IP packet and the second IP packet generated by said IP packet translator to said network;
a storage which stores a plurality of addressees assigned to respective devices of interest using the first internet protocol; and
an address translator which sets any of a plurality of first IP addresses stored in said storage in a source storing field of said first IP packet when generating said first IP packet from the received second IP packet.
2. A translator for coupling a first IP network in which a plurality of devices of interest are assigned first IP addresses such that the same first IP address is not assigned to two or more devices of interest, and a second IP network in which a plurality of devices of interest are assigned second IP addresses such that the same second IP address is not assigned to two or more devices of interest, said translator comprising:
a header translator which translates a header between a first IP packet used in said first IP network and a second IP packet used in said second IP network in order to exchange information between said first IP network and said second IP network; and
a storage which stores a plurality of IP addresses of a first class and a second class which are different from each other;
wherein, for a header translation performed to send information from said second IP network to said first IP network, any of the plurality of IP addresses of the first class stored in said storage is assigned to an address of the second class stored in a source storing field included in an IP header of said second IP packet, and the assigned IP address of the first class is stored in a source storing field included in an IP header of said first IP packet; and
for a header translation performed to send information from said first IP network to said second IP network, said second IP address stored in the source storing field included in the IP header of said second IP packet is assigned to an IP address of the first class stored in a destination storing field included in the IP header of said first IP packet, and the assigned IP address of the second class is stored in a destination storing field included in the IP header of said second IP packet.
3. A network system, comprising:
a translator which includes:
receiving means for receiving each of a first IP packet used in accordance with a first internet protocol and a second IP packet used in accordance with a second internet protocol from a network,
packet translating means responsive to receiving of the second IP packet by said receiving means, for generating a first IP packet containing data included in said second IP packet, and responsive to receiving of the first IP packet by said receiving means, for generating a second IP packet containing data included in said first IP packet, and
transmitting means for transmitting each of the first IP packet and the second IP packet generated by said IP packet translating means to said networks; and
a host using said first packet passing through said network, wherein said host includes:
host storage means for storing a plurality of first IP addresses assigned to respective devices of interest using the first IP packet,
host address translating means operative when the first packet including data to be transmitted to a destination host using the second IP packet is sent to said network for assigning any of the plurality of first IP addresses stored in said storage means to a second address assigned to said destination host within second IP addresses assigned to respective devices of interest using the second IP packet and for storing the assigned first address in a destination storing field of the first IP packet, and
means for sending address translation information including at least said second IP address assigned to said destination host and said first IP address assigned to said second IP address; and
said translator further comprises:
storage means for storing the address translation information sent from said host, and
address translating means for extracting the second IP address from said address translation information stored in said storage means and for putting said second IP address into a destination storing field of said second IP packet.
4. A network system according to claim 3, further comprising a plurality of said hosts,
each of said plurality of hosts including means for mutually exchanging the address translation information stored therein and the address translation information stored in other hosts such that the contents of the address translation information are identical over said hosts.
5. A network systems comprising:
a translator for mutually coupling a first IP network in which a plurality of devices in said first network are assigned respective first IP addresses, and a second IP network in which a plurality of devices in said second network are assigned respective second IP addresses
wherein each of said first devices include:
device storage means for storing a plurality of first IP addresses which are different from each other,
device address translating means, operative when a first IP packet including data is to be transmitted to one of said second in said second IP network, for assigning any of the plurality of first IP addresses stored in said storage means to a second IP address assigned to said second device, and for storing the assigned first IP address to a destination storing field included in an IP header of said first IP packet, and
means for sending address translation information including at least said second IP address assigned to said second device and said first IP address assigned to said second IP address; and
wherein said translator includes:
storage means for storing the address translation information sent from said first device, and
packet translating means for translating a packet between said first IP network and said second IP network using said address translation information.
6. A method of coupling IP networks for mutually coupling through a translator a first IP network wherein a plurality of devices of interest are assigned first IP addresses of a first class such that the same first IP address is not assigned to two or more devices of interest, and a second IP network wherein a plurality of devices of interest are assigned second IP addresses of a second class such that the same second IP address is not assigned to two or more devices of interest, said method comprising the steps of:
when initiating a communication between a first device of interest which is one of a plurality of devices of interest existing in said first IP network and a second device of interest which is one of a plurality of devices of interest existing in said second IP network, assigning any of a plurality of said first IP addresses of the first class to a second IP address of the second class assigned to said second device of interest;
communicating between said second device of interest and said translator using said second IP address assigned to said second device of interest, and communicating between said translator and said first device of interest using said assigned first IP address of the first class; and
releasing said assigned first IP address of the first class after termination of the communication.
7. A computer-readable recording medium storing a program for performing an internet protocol (IP) networking translation, said program for translation comprising:
program code means for receiving a first internet protocol (IP) packet sent from a host which is identified by an IP address of a first class and a second IP packet sent from a host which is identified by an IP address of a second class;
program code means for, in response to reception of the second IP packet by execution of said receiving code means, generating a first IP packet containing data included in the second IP packet, and in response to reception of the first IP packet by execution of said receiving code means, generating a second IP packet containing data included in the first IP packet;
program code means for transmitting each of the first IP packet and the second IP packet generated to said network;
program code means for storing a plurality of addresses assigned to respective devices of interest using the first internet protocol; and
program code means for setting any of a plurality of first IP addresses stored by executing of storing program code in a source storing field of said first IP packet when generating said first IP packet from the received second IP packet.
8. A translator which is connected to a network, said translator comprising:
a receiver;
an internet protocol (IP) packet translator which, upon receiving a first IP packet from a host, generates a second IP packet having data included in the received first IP packet, p1 wherein said first IP packet is identified by an IP address corresponding to a first IP, and said second IP packet is identified by an address corresponding to a second IP;
a storage which stores a plurality of IP addresses assigned to a plurality of destinations on said network according to said second IP;
an address translator which sets any of said plurality of second IP addresses stored in said storage in a source storing field of said generated second IP packet; and
a transmitter which transmits IP packets generated by said IP translator to said network.
US08887123 1996-07-04 1997-07-02 Translator for IP networks, network system using the translator, and IP network coupling method therefor Expired - Lifetime US6038233A (en)

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US09257003 US6580717B1 (en) 1996-07-04 1999-02-25 Packet communication method and apparatus and a recording medium storing a packet communication program
US09472838 US7088726B1 (en) 1996-07-04 1999-12-28 Translator for IP networks, network system using the translator, and IP network coupling method therefor
US10175496 US7283540B2 (en) 1996-07-04 2002-06-20 Translator for IP networks, network system using the translator, and IP network coupling method therefor
US10175361 US7248591B2 (en) 1996-07-04 2002-06-20 Translator for IP networks, network system using the translator, and IP network coupling method therefor
US10175494 US7251247B2 (en) 1996-07-04 2002-06-20 Translator for IP networks, network system using the translator, and IP network coupling method therefor
US10207247 US7385989B2 (en) 1996-07-04 2002-07-30 Packet communication method and apparatus and a recording medium storing a packet communication program
US10453589 US7158526B2 (en) 1996-07-04 2003-06-04 Packet communication method and apparatus and a recording medium storing a packet communication program
US11892189 US7653077B2 (en) 1996-07-04 2007-08-21 Translator for IP networks, network system using the translator, and IP network coupling method therefor
US11976639 US7701952B2 (en) 1996-07-04 2007-10-26 Packet communication method and apparatus and a recording medium storing a packet communication program
US12629954 US7965724B2 (en) 1996-07-04 2009-12-03 Translator for IP networks, network system using the translator, and IP network coupling method therefor
US12714742 US7957405B2 (en) 1996-07-04 2010-03-01 Packet communication method and apparatus and a recording medium storing a packet communication program
US13105143 US8582599B2 (en) 1996-07-04 2011-05-11 Translator for IP networks, network system using the translator, and IP network coupling method therefor

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Cited By (154)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6118784A (en) * 1996-11-01 2000-09-12 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6172986B1 (en) * 1997-05-13 2001-01-09 Hitachi, Ltd. Mobile node, mobile agent and network system
WO2001013246A1 (en) * 1999-08-12 2001-02-22 Comverse Network Systems Ltd. System and method for rapid wireless application protocol translation
US6320874B1 (en) * 1998-10-07 2001-11-20 Nortel Networks Limited Establishing and terminating connections in a mixed protocol network
US6324577B1 (en) * 1997-10-15 2001-11-27 Kabushiki Kaisha Toshiba Network management system for managing states of nodes
US20010046227A1 (en) * 2000-05-23 2001-11-29 Fujitsu Limited Communication device for selecting route of packet
US6331978B1 (en) * 1999-03-09 2001-12-18 Nokia Telecommunications, Oy Generic label encapsulation protocol for carrying label switched packets over serial links
US20020021705A1 (en) * 1996-11-01 2002-02-21 Hitachi, Ltd Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20020021697A1 (en) * 2000-07-21 2002-02-21 Kazuaki Tsuchiya Multicast routing method and apparatus for routing multicast packet
WO2002023822A1 (en) * 2000-09-13 2002-03-21 Alcatel Usa Sourcing, L.P. Method and apparatus for facilitating peer-to-peer application communication
US20020057698A1 (en) * 1995-12-29 2002-05-16 Katsuyoshi Kitai Network data communication system
WO2002044903A1 (en) * 2000-11-30 2002-06-06 Jianping Xie An universal assigning method for the networking computer to assign computer's address with full decimal algorithm
US20020075872A1 (en) * 1999-09-30 2002-06-20 Jun Ogawa Routing control method and apparatus thereof in a mixed environment of a hierarchial network and a non-hierarchial network
US20020090002A1 (en) * 2000-05-30 2002-07-11 Kazuaki Tsuchiya Multicast routing method and an apparatus for routing a multicast packet
US20020097721A1 (en) * 2001-01-23 2002-07-25 Mckenzie Douglas Evans Methods, systems and computer program products for determining simple network management protocol (SNMP) object identifiers in a management information base (MIB) file
WO2002071698A1 (en) * 2001-03-06 2002-09-12 Watchguard Technologies, Inc. Contacting a computing device outside a local network
US6457061B1 (en) * 1998-11-24 2002-09-24 Pmc-Sierra Method and apparatus for performing internet network address translation
US20020150104A1 (en) * 1996-07-04 2002-10-17 Shinichi Hamamoto Translator for IP networks, network system using the translator, and IP network coupling method therefor
US20020162026A1 (en) * 2001-02-06 2002-10-31 Michael Neuman Apparatus and method for providing secure network communication
US20020159477A1 (en) * 2001-02-28 2002-10-31 Koninklijke Philips Electronics N.V. Enhanced crosspoint bus protocol
US20020159478A1 (en) * 1997-05-13 2002-10-31 Hitachi, Ltd. Mobile node, mobile agent and network system
US20020181500A1 (en) * 1996-07-04 2002-12-05 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
WO2003005656A1 (en) * 2001-06-05 2003-01-16 Kwang Woo Ahn System and method for using the address of internet protocol version 6
US20030031173A1 (en) * 2001-08-09 2003-02-13 Park Chang-Min Multilayer internet protocol (MLIP) for peer-to-peer service of private internet and method for transmitting/receiving MLIP packet
US20030046388A1 (en) * 2001-09-06 2003-03-06 Milliken Walter Clark Systems and methods for network performance measurement using packet signature collection
US20030048804A1 (en) * 2001-09-11 2003-03-13 Hitachi, Ltd. Address translation method
US6535511B1 (en) * 1999-01-07 2003-03-18 Cisco Technology, Inc. Method and system for identifying embedded addressing information in a packet for translation between disparate addressing systems
US20030061405A1 (en) * 2001-08-15 2003-03-27 Open Technologies Group, Inc. System, method and computer program product for protocol-independent processing of information in an enterprise integration application
EP1307029A2 (en) * 2001-10-24 2003-05-02 Fujitsu Limited Address conversion scheme for communications between different address systems
US20030088697A1 (en) * 2000-06-16 2003-05-08 Naoki Matsuhira Communication device having VPN accommodation function
US20030088702A1 (en) * 2001-10-24 2003-05-08 Fujitsu Limited Address conversion scheme for communications between different address systems
US6574681B1 (en) * 1999-10-21 2003-06-03 H. Philip White Network platform for field devices
US6580717B1 (en) * 1996-07-04 2003-06-17 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US20030115485A1 (en) * 2001-12-14 2003-06-19 Milliken Walter Clark Hash-based systems and methods for detecting, preventing, and tracing network worms and viruses
EP1335529A1 (en) * 2002-02-12 2003-08-13 Alcatel Telecommunication/access system for dealing with different address lengths
US6633635B2 (en) 1999-12-30 2003-10-14 At&T Corp. Multiple call waiting in a packetized communication system
US6647001B1 (en) * 1999-12-06 2003-11-11 At&T Corp. Persistent communication with changing environment
US6650641B1 (en) * 1999-07-02 2003-11-18 Cisco Technology, Inc. Network address translation using a forwarding agent
US20030219023A1 (en) * 2002-05-24 2003-11-27 Hiroaki Miyata Packet transfer apparatus performing address translation
US20030225911A1 (en) * 2002-05-29 2003-12-04 Samsung Electronics Co., Ltd. Method and apparatus for communicating data between IPv4 and IPv6
US20030236914A1 (en) * 2002-06-25 2003-12-25 Intel Corporation Connection of next generation mobile nodes across previous generation networks to next generation networks
US6671262B1 (en) 1999-12-30 2003-12-30 At&T Corp. Conference server for automatic x-way call port expansion feature
US20040003280A1 (en) * 2002-06-27 2004-01-01 Nokia Corporation Method and system for securely transferring context updates towards a mobile node in a wireless network
US20040004940A1 (en) * 2002-07-02 2004-01-08 Nischal Abrol Communication system supporting transition between network communication protocols
US6678265B1 (en) 1999-12-30 2004-01-13 At&T Corp. Local number portability database for on-net IP call
US20040008675A1 (en) * 2002-07-09 2004-01-15 International Business Machines Corporation Method and router for forwarding internet data packets
US6680935B1 (en) 1999-12-30 2004-01-20 At&T Corp. Anonymous call rejection
US20040013130A1 (en) * 2002-07-15 2004-01-22 Hexago Inc. Method and apparatus for connecting IPV6 devices through an IPV4 network using a tunneling protocol
US6690675B1 (en) 1999-12-30 2004-02-10 At&T Corp. User programmable fail-proof IP hotline/warm-line
US20040044792A1 (en) * 2002-09-03 2004-03-04 Timberlake Holdings Data translation architecture
US6708219B1 (en) * 1999-10-26 2004-03-16 3Com Corporation Method and system for dual-network address utilization
US20040064737A1 (en) * 2000-06-19 2004-04-01 Milliken Walter Clark Hash-based systems and methods for detecting and preventing transmission of polymorphic network worms and viruses
US6728239B1 (en) 1999-12-30 2004-04-27 At&T Corp. Scaleable network server for low cost PBX
US20040088385A1 (en) * 2002-11-01 2004-05-06 Hexago Inc. Method and apparatus for connecting IPV4 devices through an IPV6 network using a tunnel setup protocol
US20040090958A1 (en) * 2002-11-13 2004-05-13 Park Chang-Min Method for transmitting and receiving packets to support internet handover service in wired and wireless combined network
US20040093434A1 (en) * 2001-03-08 2004-05-13 Peter Hovell Address translator
US20040090990A1 (en) * 2000-08-08 2004-05-13 Philippe Charlot Translation of Identifiers of user Installation Terminal in a Packet Network
US20040098484A1 (en) * 2002-11-19 2004-05-20 Wuebker Carl L. Method and system for communication between two devices by editing machine specific information at a proxy server
US20040107287A1 (en) * 2002-11-29 2004-06-03 Ananda Akkihebbal Lakshminarayana Method and apparatus for communicating on a communication network
US20040141513A1 (en) * 2003-01-10 2004-07-22 Ryuichi Takechi Address translation device
US6768743B1 (en) * 1999-10-26 2004-07-27 3Com Corporation Method and system for address server redirection for multiple address networks
US20040151128A1 (en) * 2003-01-31 2004-08-05 Wechter Gabriel Brandon Method and apparatus for processing network topology data
US20040151202A1 (en) * 2003-01-31 2004-08-05 Mandavilli Swamy J. Method and apparatus for discovering topology information in a network
US6775267B1 (en) 1999-12-30 2004-08-10 At&T Corp Method for billing IP broadband subscribers
US6775273B1 (en) 1999-12-30 2004-08-10 At&T Corp. Simplified IP service control
US20040162909A1 (en) * 2003-02-18 2004-08-19 Byung-Gu Choe Apparatus for converting IPv4 to IPv6 using dual stack and method thereof
US20040165602A1 (en) * 2003-02-21 2004-08-26 Samsung Electronics Co., Ltd. Method and apparatus for interconnecting IPv4 and IPv6 networks
US20040174873A1 (en) * 1997-11-04 2004-09-09 Van Driel Carel J.L. Communication network using different transmission properties
US20040184465A1 (en) * 2003-03-19 2004-09-23 Samsung Electronics Co., Ltd. Mobile IP communication system using dual stack transition mechanism and method thereof
US6816469B1 (en) 1999-12-30 2004-11-09 At&T Corp. IP conference call waiting
US6826173B1 (en) 1999-12-30 2004-11-30 At&T Corp. Enhanced subscriber IP alerting
US20040246991A1 (en) * 2003-06-06 2004-12-09 Hitachi Communication Technologies, Ltd. IP address translator and packet transfer apparatus
US6842264B1 (en) 2000-08-07 2005-01-11 Hewlett-Packard Development Company, L.P. Printer system and method for protocol version translation utilizing translation tables
WO2005004417A2 (en) * 2003-07-07 2005-01-13 Matsushita Electric Industrial Co., Ltd. Relay device and server, and port forward setting method
US20050034131A1 (en) * 2003-08-07 2005-02-10 Deshpande Sachin G. Apparatus and methods for providing communication between systems having different protocol versions
US6862274B1 (en) * 2000-10-26 2005-03-01 Industrial Technology Research Institute Method and system capable of providing mobility support for IPv4/IPv6 inter-networking
US6870845B1 (en) * 1998-08-04 2005-03-22 At&T Corp. Method for providing privacy by network address translation
US20050066038A1 (en) * 2003-09-09 2005-03-24 Kenichi Sakamoto Session control system, communication terminal and servers
US20050068981A1 (en) * 2003-09-25 2005-03-31 Samsung Electronics Co., Ltd. IP packet version converting apparatus and method
US20050083969A1 (en) * 2003-10-15 2005-04-21 Joo-Chul Lee Communication method using mobile IPv6 in NAT-PT environment and storage medium thereof
US20050108434A1 (en) * 2003-11-13 2005-05-19 Witchey Nicholas J. In-band firewall for an embedded system
US20050106941A1 (en) * 2003-11-13 2005-05-19 Witchey Nicholas J. Communication protocol converter and method of protocol conversion
US20050108524A1 (en) * 2003-11-13 2005-05-19 Witchey Nicholas J. Secure data transfer using an embedded system
US6917610B1 (en) 1999-12-30 2005-07-12 At&T Corp. Activity log for improved call efficiency
US20050175016A1 (en) * 2004-02-06 2005-08-11 Samsung Electronics Co., Ltd. Method, medium, and apparatus for connecting heterogeneous protocol nodes
US6950433B1 (en) * 1998-09-28 2005-09-27 Juniper Networks, Inc. Address converter for gateways interconnecting networks of different address formats
US6957275B1 (en) * 1999-06-03 2005-10-18 Panasonic Communications Co., Ltd. Gateway apparatus for controlling apparatuses on home network
US20050238052A1 (en) * 2004-04-22 2005-10-27 Sony Computer Entertainment Inc. Method and apparatus for providing an interconnection network function
US20050249213A1 (en) * 2000-04-03 2005-11-10 Hitachi, Ltd. Multicast communication method
US20050276279A1 (en) * 2004-06-10 2005-12-15 Alcatel Network unit for exchanging protocol data units through tunnels
US7006436B1 (en) * 2001-11-13 2006-02-28 At&T Corp. Method for providing voice-over-IP service
US20060062248A1 (en) * 2004-09-23 2006-03-23 Nokia Corporation Providing connection between networks using different protocols
US20060067336A1 (en) * 2004-09-30 2006-03-30 Brother Kogyo Kabushiki Kaisha Parameter setting system, device and parameter setting program
US20060067495A1 (en) * 2004-09-30 2006-03-30 Brother Kogyo Kabushiki Kaisha Information display device and information display program
US20060092134A1 (en) * 2004-10-08 2006-05-04 Brother Kogyo Kabushiki Kaisha Device, method, system and program for setting management
US20060133373A1 (en) * 2004-12-20 2006-06-22 Sung-Chan Paik Network system and method for assigning dynamic address and performing routing based upon dynamic address
US20060137011A1 (en) * 2004-12-16 2006-06-22 Kim Myung E System and method for coping with encrypted harmful traffic in hybrid IPv4/IPv6 networks
US7072981B1 (en) * 2000-12-21 2006-07-04 Cisco Technology, Inc. Preallocation of client network address translation addresses for client-server networks
US20060153228A1 (en) * 2003-06-30 2006-07-13 Stahl Thomas A Method and apparatus for mapping prioritized qos packets to parameterized qos channels and vice versa
US7089328B1 (en) * 2000-12-29 2006-08-08 Cisco Technology, Inc. Method allocation scheme for maintaining server load balancers services in a high throughput environment
WO2006084957A1 (en) * 2005-02-14 2006-08-17 Teliasonera Ab Communication channel between at least two private networks
US20060184690A1 (en) * 2005-02-15 2006-08-17 Bbn Technologies Corp. Method for source-spoofed IP packet traceback
US7120139B1 (en) 1999-12-30 2006-10-10 At&T Corp. Broadband cable telephony network architecture IP ITN network architecture reference model
US20060256770A1 (en) * 2005-05-13 2006-11-16 Lockheed Martin Corporation Interface for configuring ad hoc network packet control
US20060256814A1 (en) * 2005-05-13 2006-11-16 Lockheed Martin Corporation Ad hoc computer network
US20060256717A1 (en) * 2005-05-13 2006-11-16 Lockheed Martin Corporation Electronic packet control system
US20060256716A1 (en) * 2005-05-13 2006-11-16 Lockheed Martin Corporation Electronic communication control
US20070011326A1 (en) * 2005-07-05 2007-01-11 Brother Kogyo Kabushiki Kaisha Information processing device and program
US7188191B1 (en) * 1999-09-24 2007-03-06 British Telecommunications Public Limited Company Packet network interfacing
US7200105B1 (en) 2001-01-12 2007-04-03 Bbn Technologies Corp. Systems and methods for point of ingress traceback of a network attack
EP1861940A2 (en) * 2005-03-21 2007-12-05 Cisco Technology, Inc. Method and system for automatically interconnecting ipv4 networks across an ipv6 network
US20070286151A1 (en) * 2006-06-07 2007-12-13 Rajat Prakash Method and apparatus used for airlink communications
US20080052281A1 (en) * 2006-08-23 2008-02-28 Lockheed Martin Corporation Database insertion and retrieval system and method
US20080069111A1 (en) * 2006-09-20 2008-03-20 Carl David Sutton Using QoS tunnels for TCP latency optimization
US20080080519A1 (en) * 2006-09-29 2008-04-03 Min Ho Park Protocol conversion apparatus and method between IPv4 terminal and IPv6 terminal or between application programs using mapping table, and method of generating mapping table of protocol conversion apparatus
CN100391213C (en) 2001-08-30 2008-05-28 西门子公司 Method for transmitting data between inner data netwok and public data network
US20080172493A1 (en) * 2007-01-11 2008-07-17 Ericsson, Inc. Method, system and host for telecommunications involving IPv4 and IPv6
US7440471B1 (en) * 2002-04-17 2008-10-21 Mcafee, Inc. System and method for facilitating IPv6 protocol usage by an application program
US20080273461A1 (en) * 2005-03-29 2008-11-06 International Business Machines Corporation Network system, traffic balancing method, network monitoring device and host
US7472201B1 (en) * 2002-09-12 2008-12-30 Cisco Technology, Inc. Method and system for resolving domain name system queries in a multiprotocol communications network
US20090037595A1 (en) * 2007-07-31 2009-02-05 Sprint Communications Company L.P. Selecting and applying a communication version
US20090063999A1 (en) * 2004-02-12 2009-03-05 Mark Gaug Graphical authoring and editing of mark-up language sequences
US20090144798A1 (en) * 2004-07-08 2009-06-04 Link Us All, L.L.C. Optimized peer-to-peer mobile communications
US20090157900A1 (en) * 2005-05-25 2009-06-18 Yi Ge Method For Ipv4 Application Transition Over Ipv6 Networks
US20090262741A1 (en) * 2000-06-23 2009-10-22 Jungck Peder J Transparent Provisioning of Services Over a Network
US20100103837A1 (en) * 2000-06-23 2010-04-29 Jungck Peder J Transparent provisioning of network access to an application
US20100118869A1 (en) * 2008-11-13 2010-05-13 Blue Coat Systems Inc. Facilitating Transition of Network Operations from IP Version 4 to IP Version 6
US7764686B1 (en) * 2002-12-19 2010-07-27 Cisco Technology, Inc. Migration to IPv6 using combination of globally significant and locally significant IPv4 addresses
WO2010108431A1 (en) * 2009-03-26 2010-09-30 华为技术有限公司 Method for realizing ipv6 host visting ipv4 host, method for obtaining ipv6 address prefix and translation device
US7818449B2 (en) 2002-09-03 2010-10-19 Thomson Licensing Mechanism for providing quality of service in a network utilizing priority and reserved bandwidth protocols
USRE42003E1 (en) * 2000-10-10 2010-12-21 Ericsson Ab Assisted power-up and hand off system and method
US20110019677A1 (en) * 2009-07-21 2011-01-27 Cisco Technology, Inc., A Corporation Of California Limiting of Network Device Resources Responsive to IPv6 Originating Entity Identification
US7940746B2 (en) 2004-08-24 2011-05-10 Comcast Cable Holdings, Llc Method and system for locating a voice over internet protocol (VoIP) device connected to a network
US8027339B2 (en) 1997-03-12 2011-09-27 Nomadix, Inc. System and method for establishing network connection
US8156246B2 (en) 1998-12-08 2012-04-10 Nomadix, Inc. Systems and methods for providing content and services on a network system
US8190708B1 (en) 1999-10-22 2012-05-29 Nomadix, Inc. Gateway device having an XML interface and associated method
US8204945B2 (en) 2000-06-19 2012-06-19 Stragent, Llc Hash-based systems and methods for detecting and preventing transmission of unwanted e-mail
US8266269B2 (en) 1998-12-08 2012-09-11 Nomadix, Inc. Systems and methods for providing content and services on a network system
US20120236872A1 (en) * 2003-12-29 2012-09-20 Colin Whitby-Strevens Methods and apparatus for bridged data transmission and protocol translation in a high-speed serialized data system
US20120257558A1 (en) * 2011-04-08 2012-10-11 The Regents Of The University Of Michigan Reducing energy consumption in wireless devices
FR2975852A1 (en) * 2011-05-24 2012-11-30 Airbus Operations Sas Method for addressing Internet protocol version 6 for on-board platform of fleet aircraft, involves assigning private Internet protocol address for on-board platform so that private address is used only within on-board network
CN101060464B (en) 2001-12-07 2012-12-26 株式会社日立制作所 Address translator, message processing method and net system
US20130016719A1 (en) * 2011-07-11 2013-01-17 Oracle International Corporation System and method for supporting a scalable flooding mechanism in a middleware machine environment
US20130279518A1 (en) * 2012-04-19 2013-10-24 Futurewei Technologies, Inc. System and Apparatus for Router Advertisement Options for Configuring Networks to Support IPv6 to IPv4 Multicast Translation
CN103441933A (en) * 2013-07-22 2013-12-11 汉柏科技有限公司 Method for achieving communication between IPV4 device and IPV6 device
US8613053B2 (en) 1998-12-08 2013-12-17 Nomadix, Inc. System and method for authorizing a portable communication device
US20150207772A1 (en) * 2014-01-20 2015-07-23 Robert Walker Systems, Methods, and Apparatuses using Common Addressing
EP2274655B1 (en) 2008-04-11 2015-08-05 Phoenix Contact GmbH & Co. KG Method, system and bus coupler for exchanging data between an overlay network and an underlay network
US9197981B2 (en) 2011-04-08 2015-11-24 The Regents Of The University Of Michigan Coordination amongst heterogeneous wireless devices
US9286294B2 (en) 1992-12-09 2016-03-15 Comcast Ip Holdings I, Llc Video and digital multimedia aggregator content suggestion engine
US20160094513A1 (en) * 2014-09-30 2016-03-31 A10 Networks, Incorporated Use of packet header extension for layer-3 direct server return
US9332005B2 (en) 2011-07-11 2016-05-03 Oracle International Corporation System and method for providing switch based subnet management packet (SMP) traffic protection in a middleware machine environment
US20170250910A1 (en) * 2016-02-25 2017-08-31 Red Hat, Inc. Routing traffic between networks governed by different versions of the internet protocol
US9813641B2 (en) 2000-06-19 2017-11-07 Comcast Ip Holdings I, Llc Method and apparatus for targeting of interactive virtual objects

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1141293A (en) 1997-07-15 1999-02-12 Nec Corp Exchange device
JP4157403B2 (en) 2003-03-19 2008-10-01 株式会社日立製作所 Packet communication device
JP4572938B2 (en) * 2008-02-15 2010-11-04 株式会社日立製作所 Address conversion method
JP4670979B2 (en) * 2009-06-11 2011-04-13 株式会社日立製作所 Packet generation method and a recording medium recording the information processing apparatus, and a packet generation program having the functions
JP4851565B2 (en) * 2009-06-17 2012-01-11 株式会社日立製作所 Communication device
US9009353B1 (en) * 2014-04-11 2015-04-14 Cable Television Laboratories, Inc. Split network address translation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5793763A (en) * 1995-11-03 1998-08-11 Cisco Technology, Inc. Security system for network address translation systems
US5802285A (en) * 1992-05-29 1998-09-01 Icl Personal Systems Oy Wide area network (WAN) interface for a transmission control protocol/internet protocol (TCP/IP) in a local area network (LAN)
US5802053A (en) * 1995-10-13 1998-09-01 International Business Machines Corporation Transport gateway between a native network and a mixed network

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5802285A (en) * 1992-05-29 1998-09-01 Icl Personal Systems Oy Wide area network (WAN) interface for a transmission control protocol/internet protocol (TCP/IP) in a local area network (LAN)
US5802053A (en) * 1995-10-13 1998-09-01 International Business Machines Corporation Transport gateway between a native network and a mixed network
US5793763A (en) * 1995-11-03 1998-08-11 Cisco Technology, Inc. Security system for network address translation systems

Cited By (346)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9286294B2 (en) 1992-12-09 2016-03-15 Comcast Ip Holdings I, Llc Video and digital multimedia aggregator content suggestion engine
US6950436B2 (en) * 1995-12-29 2005-09-27 Hitachi, Ltd. Network data communication system
US20020057698A1 (en) * 1995-12-29 2002-05-16 Katsuyoshi Kitai Network data communication system
US7283540B2 (en) 1996-07-04 2007-10-16 Hitachi, Ltd. Translator for IP networks, network system using the translator, and IP network coupling method therefor
US7248591B2 (en) 1996-07-04 2007-07-24 Hitachi, Ltd. Translator for IP networks, network system using the translator, and IP network coupling method therefor
US8582599B2 (en) 1996-07-04 2013-11-12 Hitachi, Ltd. Translator for IP networks, network system using the translator, and IP network coupling method therefor
US20080043762A1 (en) * 1996-07-04 2008-02-21 Shinichi Hamamoto Translator for IP networks, network system using the translator, and IP network coupling method therefor
US7965724B2 (en) 1996-07-04 2011-06-21 Hitachi, Ltd. Translator for IP networks, network system using the translator, and IP network coupling method therefor
US7385989B2 (en) 1996-07-04 2008-06-10 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US20020181500A1 (en) * 1996-07-04 2002-12-05 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US20030193965A1 (en) * 1996-07-04 2003-10-16 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US6580717B1 (en) * 1996-07-04 2003-06-17 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US7251247B2 (en) 1996-07-04 2007-07-31 Hitachi, Ltd. Translator for IP networks, network system using the translator, and IP network coupling method therefor
US20110211581A1 (en) * 1996-07-04 2011-09-01 Shinichi Hamamoto Translator for ip networks, network system using the translator, and ip network coupling method therefor
US20020150103A1 (en) * 1996-07-04 2002-10-17 Shinichi Hamamoto Translator for IP networks, network system using the translator, and IP network coupling method therefor
US7158526B2 (en) 1996-07-04 2007-01-02 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US7957405B2 (en) 1996-07-04 2011-06-07 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US20020150104A1 (en) * 1996-07-04 2002-10-17 Shinichi Hamamoto Translator for IP networks, network system using the translator, and IP network coupling method therefor
US20100158012A1 (en) * 1996-07-04 2010-06-24 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US7701952B2 (en) 1996-07-04 2010-04-20 Hitachi, Ltd. Packet communication method and apparatus and a recording medium storing a packet communication program
US20100080230A1 (en) * 1996-07-04 2010-04-01 Shinichi Hamamoto Translator for ip networks, network system using the translator, and ip network coupling method therefor
US7653077B2 (en) 1996-07-04 2010-01-26 Hitachi, Ltd. Translator for IP networks, network system using the translator, and IP network coupling method therefor
US20020136237A1 (en) * 1996-11-01 2002-09-26 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4 converting apparatus
US20020136216A1 (en) * 1996-11-01 2002-09-26 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US7746863B2 (en) 1996-11-01 2010-06-29 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20020150112A1 (en) * 1996-11-01 2002-10-17 Hitachi, Ltd. Communication method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6690669B1 (en) * 1996-11-01 2004-02-10 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6920138B2 (en) 1996-11-01 2005-07-19 Hitachi, Ltd. Communication method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20020024960A1 (en) * 1996-11-01 2002-02-28 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6920136B2 (en) 1996-11-01 2005-07-19 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20020021706A1 (en) * 1996-11-01 2002-02-21 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20020021703A1 (en) * 1996-11-01 2002-02-21 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20020021704A1 (en) * 1996-11-01 2002-02-21 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6118784A (en) * 1996-11-01 2000-09-12 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6985485B2 (en) 1996-11-01 2006-01-10 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US8031716B2 (en) 1996-11-01 2011-10-04 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US8594108B2 (en) 1996-11-01 2013-11-26 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20070133600A1 (en) * 1996-11-01 2007-06-14 Kazuaki Tsuchiya Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6920137B2 (en) 1996-11-01 2005-07-19 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6912219B2 (en) 1996-11-01 2005-06-28 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4 converting apparatus
US7072339B2 (en) 1996-11-01 2006-07-04 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US7072338B2 (en) 1996-11-01 2006-07-04 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20050243828A1 (en) * 1996-11-01 2005-11-03 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US7193998B2 (en) 1996-11-01 2007-03-20 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US20020021705A1 (en) * 1996-11-01 2002-02-21 Hitachi, Ltd Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US6928077B2 (en) 1996-11-01 2005-08-09 Hitachi, Ltd. Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus
US8594107B2 (en) 1997-03-12 2013-11-26 Nomadix, Inc. System and method for establishing network connection
US8027339B2 (en) 1997-03-12 2011-09-27 Nomadix, Inc. System and method for establishing network connection
US7453905B2 (en) * 1997-05-13 2008-11-18 Hitachi, Ltd. Mobile node, mobile agent and network system
US20050190713A1 (en) * 1997-05-13 2005-09-01 Tatsuya Watanuki Mobile node, mobile agent and network system
US20020159478A1 (en) * 1997-05-13 2002-10-31 Hitachi, Ltd. Mobile node, mobile agent and network system
US7643447B2 (en) 1997-05-13 2010-01-05 Hitachi, Ltd. Mobile node, mobile agent and network system
US20090046635A1 (en) * 1997-05-13 2009-02-19 Tatsuya Watanuki Mobile node, mobile agent and network system
US6172986B1 (en) * 1997-05-13 2001-01-09 Hitachi, Ltd. Mobile node, mobile agent and network system
US6888845B2 (en) * 1997-05-13 2005-05-03 Hitachi, Ltd. Mobile node, mobile agent and network system
US6868089B1 (en) * 1997-05-13 2005-03-15 Hitachi, Ltd. Mobile node, mobile agent-and network system
US6724775B2 (en) * 1997-05-13 2004-04-20 Hitachi, Ltd. Mobile node, mobile agent and network system
US6785293B2 (en) * 1997-05-13 2004-08-31 Hitachi, Ltd. Mobile node, mobile agent and network system
US6324577B1 (en) * 1997-10-15 2001-11-27 Kabushiki Kaisha Toshiba Network management system for managing states of nodes
US20040174873A1 (en) * 1997-11-04 2004-09-09 Van Driel Carel J.L. Communication network using different transmission properties
US6870845B1 (en) * 1998-08-04 2005-03-22 At&T Corp. Method for providing privacy by network address translation
US8077711B2 (en) * 1998-09-28 2011-12-13 Juniper Networks, Inc. Address converter for gateways interconnecting networks of different address formats
US20060039377A1 (en) * 1998-09-28 2006-02-23 Tsugio Okamoto Address converter for gateways interconnecting networks of different address formats
US20080198852A1 (en) * 1998-09-28 2008-08-21 Juniper Networks, Inc. Address converter for gateways interconnecting networks of different address formats
US6950433B1 (en) * 1998-09-28 2005-09-27 Juniper Networks, Inc. Address converter for gateways interconnecting networks of different address formats
US7379425B2 (en) 1998-09-28 2008-05-27 Juniper Networks, Inc. Address converter for gateways interconnecting networks of different address formats
US6320874B1 (en) * 1998-10-07 2001-11-20 Nortel Networks Limited Establishing and terminating connections in a mixed protocol network
US6457061B1 (en) * 1998-11-24 2002-09-24 Pmc-Sierra Method and apparatus for performing internet network address translation
US8725899B2 (en) 1998-12-08 2014-05-13 Nomadix, Inc. Systems and methods for providing content and services on a network system
US8725888B2 (en) 1998-12-08 2014-05-13 Nomadix, Inc. Systems and methods for providing content and services on a network system
US9548935B2 (en) 1998-12-08 2017-01-17 Nomadix, Inc. Systems and methods for providing content and services on a network system
US8606917B2 (en) 1998-12-08 2013-12-10 Nomadix, Inc. Systems and methods for providing content and services on a network system
US8713641B1 (en) 1998-12-08 2014-04-29 Nomadix, Inc. Systems and methods for authorizing, authenticating and accounting users having transparent computer access to a network using a gateway device
US8266266B2 (en) 1998-12-08 2012-09-11 Nomadix, Inc. Systems and methods for providing dynamic network authorization, authentication and accounting
US8370477B2 (en) 1998-12-08 2013-02-05 Nomadix, Inc. Systems and methods for providing content and services on a network system
US8244886B2 (en) 1998-12-08 2012-08-14 Nomadix, Inc. Systems and methods for providing content and services on a network system
US8156246B2 (en) 1998-12-08 2012-04-10 Nomadix, Inc. Systems and methods for providing content and services on a network system
US9160672B2 (en) 1998-12-08 2015-10-13 Nomadix, Inc. Systems and methods for controlling user perceived connection speed
US8364806B2 (en) 1998-12-08 2013-01-29 Nomadix, Inc. Systems and methods for providing content and services on a network system
US8788690B2 (en) 1998-12-08 2014-07-22 Nomadix, Inc. Systems and methods for providing content and services on a network system
US8613053B2 (en) 1998-12-08 2013-12-17 Nomadix, Inc. System and method for authorizing a portable communication device
US8266269B2 (en) 1998-12-08 2012-09-11 Nomadix, Inc. Systems and methods for providing content and services on a network system
US7215669B1 (en) 1999-01-07 2007-05-08 Cisco Technology, Inc. Method and system for identifying embedded addressing information in a packet for translation between disparate addressing systems
US6535511B1 (en) * 1999-01-07 2003-03-18 Cisco Technology, Inc. Method and system for identifying embedded addressing information in a packet for translation between disparate addressing systems
US6331978B1 (en) * 1999-03-09 2001-12-18 Nokia Telecommunications, Oy Generic label encapsulation protocol for carrying label switched packets over serial links
US6957275B1 (en) * 1999-06-03 2005-10-18 Panasonic Communications Co., Ltd. Gateway apparatus for controlling apparatuses on home network
US6650641B1 (en) * 1999-07-02 2003-11-18 Cisco Technology, Inc. Network address translation using a forwarding agent
US6985440B1 (en) 1999-07-02 2006-01-10 Cisco Technology, Inc. Network address translation using a forwarding agent
US6356529B1 (en) * 1999-08-12 2002-03-12 Converse, Ltd. System and method for rapid wireless application protocol translation
WO2001013246A1 (en) * 1999-08-12 2001-02-22 Comverse Network Systems Ltd. System and method for rapid wireless application protocol translation
US7188191B1 (en) * 1999-09-24 2007-03-06 British Telecommunications Public Limited Company Packet network interfacing
US7035261B2 (en) * 1999-09-30 2006-04-25 Fujitsu Limited Routing control method and apparatus thereof in a mixed environment of a hierarchial network and a non-hierarchial network
US20020075872A1 (en) * 1999-09-30 2002-06-20 Jun Ogawa Routing control method and apparatus thereof in a mixed environment of a hierarchial network and a non-hierarchial network
US6574681B1 (en) * 1999-10-21 2003-06-03 H. Philip White Network platform for field devices
US8516083B2 (en) 1999-10-22 2013-08-20 Nomadix, Inc. Systems and methods of communicating using XML
US8190708B1 (en) 1999-10-22 2012-05-29 Nomadix, Inc. Gateway device having an XML interface and associated method
US6768743B1 (en) * 1999-10-26 2004-07-27 3Com Corporation Method and system for address server redirection for multiple address networks
US6708219B1 (en) * 1999-10-26 2004-03-16 3Com Corporation Method and system for dual-network address utilization
US6647001B1 (en) * 1999-12-06 2003-11-11 At&T Corp. Persistent communication with changing environment
US6917610B1 (en) 1999-12-30 2005-07-12 At&T Corp. Activity log for improved call efficiency
US7120139B1 (en) 1999-12-30 2006-10-10 At&T Corp. Broadband cable telephony network architecture IP ITN network architecture reference model
US6775267B1 (en) 1999-12-30 2004-08-10 At&T Corp Method for billing IP broadband subscribers
US6678265B1 (en) 1999-12-30 2004-01-13 At&T Corp. Local number portability database for on-net IP call
US6680935B1 (en) 1999-12-30 2004-01-20 At&T Corp. Anonymous call rejection
US6690675B1 (en) 1999-12-30 2004-02-10 At&T Corp. User programmable fail-proof IP hotline/warm-line
US6671262B1 (en) 1999-12-30 2003-12-30 At&T Corp. Conference server for automatic x-way call port expansion feature
US6775273B1 (en) 1999-12-30 2004-08-10 At&T Corp. Simplified IP service control
US6816469B1 (en) 1999-12-30 2004-11-09 At&T Corp. IP conference call waiting
US6826173B1 (en) 1999-12-30 2004-11-30 At&T Corp. Enhanced subscriber IP alerting
US6633635B2 (en) 1999-12-30 2003-10-14 At&T Corp. Multiple call waiting in a packetized communication system
US6728239B1 (en) 1999-12-30 2004-04-27 At&T Corp. Scaleable network server for low cost PBX
US8711735B2 (en) 1999-12-30 2014-04-29 At&T Intellectual Property, Ii, L.P. Personal IP toll-free number
US7583698B2 (en) * 2000-04-03 2009-09-01 Hitachi, Ltd. Multicast communication method
US20050249213A1 (en) * 2000-04-03 2005-11-10 Hitachi, Ltd. Multicast communication method
US20010046227A1 (en) * 2000-05-23 2001-11-29 Fujitsu Limited Communication device for selecting route of packet
US7075932B2 (en) * 2000-05-23 2006-07-11 Fujitsu Limited Communication device for selecting route of packet
US20020090002A1 (en) * 2000-05-30 2002-07-11 Kazuaki Tsuchiya Multicast routing method and an apparatus for routing a multicast packet
US7400645B2 (en) * 2000-05-30 2008-07-15 Hitachi, Ltd. Multicast routing method and an apparatus for routing a multicast packet
US7400646B2 (en) * 2000-05-30 2008-07-15 Hitachi, Ltd. Multicast routing method and an apparatus for routing a multicast packet
EP2375643A1 (en) * 2000-06-16 2011-10-12 Fujitsu Limited Communication device having VPN accomodation function
US8423669B2 (en) 2000-06-16 2013-04-16 Fujitsu Limited Communication device having VPN accommodation function
EP2288083A1 (en) * 2000-06-16 2011-02-23 Fujitsu Limited Communication device having VPN accomodation function
US20100223401A1 (en) * 2000-06-16 2010-09-02 Fujitsu Limited Communication Device Having VPN Accommodation Function
EP2375644A1 (en) * 2000-06-16 2011-10-12 Fujitsu Limited Communication device having VPN accomodation function
US9413657B2 (en) 2000-06-16 2016-08-09 Fujitsu Limited Communication device having VPN accommodation function
US8489767B2 (en) 2000-06-16 2013-07-16 Fujitsu Limited Communication device having VPN accommodation function
US20030088697A1 (en) * 2000-06-16 2003-05-08 Naoki Matsuhira Communication device having VPN accommodation function
EP2276204A1 (en) * 2000-06-16 2011-01-19 Fujitsu Limited Communication device having VPN accomodation function
US8272060B2 (en) 2000-06-19 2012-09-18 Stragent, Llc Hash-based systems and methods for detecting and preventing transmission of polymorphic network worms and viruses
US8204945B2 (en) 2000-06-19 2012-06-19 Stragent, Llc Hash-based systems and methods for detecting and preventing transmission of unwanted e-mail
US9813641B2 (en) 2000-06-19 2017-11-07 Comcast Ip Holdings I, Llc Method and apparatus for targeting of interactive virtual objects
US20040064737A1 (en) * 2000-06-19 2004-04-01 Milliken Walter Clark Hash-based systems and methods for detecting and preventing transmission of polymorphic network worms and viruses
US9258241B2 (en) * 2000-06-23 2016-02-09 Cloudshield Technologies, Inc. Transparent provisioning of services over a network
US9444785B2 (en) * 2000-06-23 2016-09-13 Cloudshield Technologies, Inc. Transparent provisioning of network access to an application
US20130263247A1 (en) * 2000-06-23 2013-10-03 Peder J. Jungck Transparent Provisioning of Network Access to an Application
US20140098662A1 (en) * 2000-06-23 2014-04-10 Cloudshield Technologies, Inc. Transparent provisioning of services over a network
US8576881B2 (en) 2000-06-23 2013-11-05 Cloudshield Technologies, Inc. Transparent provisioning of services over a network
US20090262741A1 (en) * 2000-06-23 2009-10-22 Jungck Peder J Transparent Provisioning of Services Over a Network
US8204082B2 (en) * 2000-06-23 2012-06-19 Cloudshield Technologies, Inc. Transparent provisioning of services over a network
US9537824B2 (en) * 2000-06-23 2017-01-03 Cloudshield Technologies, Inc. Transparent provisioning of network access to an application
US20100103837A1 (en) * 2000-06-23 2010-04-29 Jungck Peder J Transparent provisioning of network access to an application
US9634943B2 (en) 2000-06-23 2017-04-25 Cloudshield Technologies, Inc. Transparent provisioning of services over a network
US20090016345A1 (en) * 2000-07-21 2009-01-15 Kazuaki Tsuchiya Multicast routing method and apparatus for routing multicast packet
US7860094B2 (en) 2000-07-21 2010-12-28 Hitachi, Ltd. Multicast routing method and apparatus for routing multicast packet
US7158514B2 (en) * 2000-07-21 2007-01-02 Hitachi, Ltd. Multicast routing method and apparatus for routing multicast packet
US7403522B2 (en) * 2000-07-21 2008-07-22 Hitachi, Ltd. Multicast routing method and apparatus for routing multicast packet
US20060274751A1 (en) * 2000-07-21 2006-12-07 Hitachi, Ltd. Multicast routing method and apparatus for routing multicast packet
US20020021697A1 (en) * 2000-07-21 2002-02-21 Kazuaki Tsuchiya Multicast routing method and apparatus for routing multicast packet
US7403520B2 (en) * 2000-07-21 2008-07-22 Hitachi, Ltd. Multicast routing method and apparatus for routing multicast packet
US20020176420A1 (en) * 2000-07-21 2002-11-28 Hitachi, Ltd. Multicast routing method and apparatus for routing multicast packet
US6842264B1 (en) 2000-08-07 2005-01-11 Hewlett-Packard Development Company, L.P. Printer system and method for protocol version translation utilizing translation tables
US20040090990A1 (en) * 2000-08-08 2004-05-13 Philippe Charlot Translation of Identifiers of user Installation Terminal in a Packet Network
US7362747B2 (en) * 2000-08-08 2008-04-22 France Telecom Translation of identifiers of user installation terminal in a packet network
CN100542161C (en) 2000-08-08 2009-09-16 法国电信公司 Translation of identifiers in a packet network
US6661799B1 (en) * 2000-09-13 2003-12-09 Alcatel Usa Sourcing, L.P. Method and apparatus for facilitating peer-to-peer application communication
CN100512165C (en) 2000-09-13 2009-07-08 阿尔开泰尔美国资源开发有限合伙公司 Method, device and system for facilitating peer-to-peer application communication
USRE43057E1 (en) 2000-09-13 2012-01-03 Alcatel Lucent Method and apparatus for facilitating peer-to-peer application communication
WO2002023822A1 (en) * 2000-09-13 2002-03-21 Alcatel Usa Sourcing, L.P. Method and apparatus for facilitating peer-to-peer application communication
USRE44593E1 (en) * 2000-09-13 2013-11-12 Alcatel Lucent Method and apparatus for facilitating peer-to-peer application communication
USRE42003E1 (en) * 2000-10-10 2010-12-21 Ericsson Ab Assisted power-up and hand off system and method
US6862274B1 (en) * 2000-10-26 2005-03-01 Industrial Technology Research Institute Method and system capable of providing mobility support for IPv4/IPv6 inter-networking
WO2002044903A1 (en) * 2000-11-30 2002-06-06 Jianping Xie An universal assigning method for the networking computer to assign computer's address with full decimal algorithm
US20060248231A1 (en) * 2000-12-21 2006-11-02 Cisco Technology, Inc. Preallocation of Client Network Address Translation Addresses for Client-Server Networks
US7072981B1 (en) * 2000-12-21 2006-07-04 Cisco Technology, Inc. Preallocation of client network address translation addresses for client-server networks
US7660909B2 (en) 2000-12-21 2010-02-09 Cisco Technology, Inc. Preallocation of client network address translation addresses for client-server networks
US7089328B1 (en) * 2000-12-29 2006-08-08 Cisco Technology, Inc. Method allocation scheme for maintaining server load balancers services in a high throughput environment
US7200105B1 (en) 2001-01-12 2007-04-03 Bbn Technologies Corp. Systems and methods for point of ingress traceback of a network attack
US6981038B2 (en) 2001-01-23 2005-12-27 International Business Machines Corporation Methods, systems and computer program products for determining simple network management protocol (SNMP) object identifiers in a management information base (MIB) file
US20020097721A1 (en) * 2001-01-23 2002-07-25 Mckenzie Douglas Evans Methods, systems and computer program products for determining simple network management protocol (SNMP) object identifiers in a management information base (MIB) file
US20020162026A1 (en) * 2001-02-06 2002-10-31 Michael Neuman Apparatus and method for providing secure network communication
US20020159477A1 (en) * 2001-02-28 2002-10-31 Koninklijke Philips Electronics N.V. Enhanced crosspoint bus protocol
US6961336B2 (en) 2001-03-06 2005-11-01 Watchguard Technologies, Inc. Contacting a computing device outside a local network
US20040153575A1 (en) * 2001-03-06 2004-08-05 Robert Coggeshall Contacting a computing device outside a local network
WO2002071698A1 (en) * 2001-03-06 2002-09-12 Watchguard Technologies, Inc. Contacting a computing device outside a local network
US20040093434A1 (en) * 2001-03-08 2004-05-13 Peter Hovell Address translator
US8046452B2 (en) 2001-03-08 2011-10-25 British Telecommunications Public Limited Company Inter-network address translator that is separately addressable from address alias assignment process
WO2003005656A1 (en) * 2001-06-05 2003-01-16 Kwang Woo Ahn System and method for using the address of internet protocol version 6
US20030031173A1 (en) * 2001-08-09 2003-02-13 Park Chang-Min Multilayer internet protocol (MLIP) for peer-to-peer service of private internet and method for transmitting/receiving MLIP packet
US20030061405A1 (en) * 2001-08-15 2003-03-27 Open Technologies Group, Inc. System, method and computer program product for protocol-independent processing of information in an enterprise integration application
CN100391213C (en) 2001-08-30 2008-05-28 西门子公司 Method for transmitting data between inner data netwok and public data network
US6978223B2 (en) 2001-09-06 2005-12-20 Bbnt Solutions Llc Systems and methods for network performance measurement using packet signature collection
US20030046388A1 (en) * 2001-09-06 2003-03-06 Milliken Walter Clark Systems and methods for network performance measurement using packet signature collection
US20030048804A1 (en) * 2001-09-11 2003-03-13 Hitachi, Ltd. Address translation method
US20060227780A1 (en) * 2001-09-11 2006-10-12 Hitachi, Ltd. Address translation method
US7085270B2 (en) * 2001-09-11 2006-08-01 Hitachi, Ltd. Address translation method
US7630374B2 (en) 2001-09-11 2009-12-08 Hitachi, Ltd. Address translation method
EP1307029A2 (en) * 2001-10-24 2003-05-02 Fujitsu Limited Address conversion scheme for communications between different address systems
EP1307029A3 (en) * 2001-10-24 2004-01-07 Fujitsu Limited Address conversion scheme for communications between different address systems
US20030088702A1 (en) * 2001-10-24 2003-05-08 Fujitsu Limited Address conversion scheme for communications between different address systems
US8203946B1 (en) 2001-11-13 2012-06-19 At&T Intellectual Property Ii, L.P. Method for providing voice-over-IP service
US7203166B1 (en) * 2001-11-13 2007-04-10 At&T Corp. Method for providing voice-over-IP service
US7006436B1 (en) * 2001-11-13 2006-02-28 At&T Corp. Method for providing voice-over-IP service
CN101060464B (en) 2001-12-07 2012-12-26 株式会社日立制作所 Address translator, message processing method and net system
US20030115485A1 (en) * 2001-12-14 2003-06-19 Milliken Walter Clark Hash-based systems and methods for detecting, preventing, and tracing network worms and viruses
US7328349B2 (en) 2001-12-14 2008-02-05 Bbn Technologies Corp. Hash-based systems and methods for detecting, preventing, and tracing network worms and viruses
US20030152090A1 (en) * 2002-02-12 2003-08-14 Alcatel Telecommunication/access system for dealing with deifferent address lengths
EP1335529A1 (en) * 2002-02-12 2003-08-13 Alcatel Telecommunication/access system for dealing with different address lengths
US8761198B2 (en) 2002-02-12 2014-06-24 Alcatel Lucent Telecommunication/access system for dealing with different address lengths
US7440471B1 (en) * 2002-04-17 2008-10-21 Mcafee, Inc. System and method for facilitating IPv6 protocol usage by an application program
US7609717B2 (en) * 2002-05-24 2009-10-27 Hitachi, Ltd. Packet transfer apparatus performing address translation
US20030219023A1 (en) * 2002-05-24 2003-11-27 Hiroaki Miyata Packet transfer apparatus performing address translation
US20030225911A1 (en) * 2002-05-29 2003-12-04 Samsung Electronics Co., Ltd. Method and apparatus for communicating data between IPv4 and IPv6
US20030236914A1 (en) * 2002-06-25 2003-12-25 Intel Corporation Connection of next generation mobile nodes across previous generation networks to next generation networks
US6823461B2 (en) * 2002-06-27 2004-11-23 Nokia Corporation Method and system for securely transferring context updates towards a mobile node in a wireless network
WO2004003677A3 (en) * 2002-06-27 2004-05-13 Nokia Corp Method and system for securely transferring context updates towards a mobile node in a wireless network
US20040003280A1 (en) * 2002-06-27 2004-01-01 Nokia Corporation Method and system for securely transferring context updates towards a mobile node in a wireless network
WO2004003677A2 (en) * 2002-06-27 2004-01-08 Nokia Corporation Method and system for securely transferring context updates towards a mobile node in a wireless network
US7701958B2 (en) * 2002-07-02 2010-04-20 Qualcomm Incorporated Communication system supporting transition between network communications protocols
US20040004940A1 (en) * 2002-07-02 2004-01-08 Nischal Abrol Communication system supporting transition between network communication protocols
US20040008675A1 (en) * 2002-07-09 2004-01-15 International Business Machines Corporation Method and router for forwarding internet data packets
US7260096B2 (en) 2002-07-09 2007-08-21 International Business Machines Corporation Method and router for forwarding internet data packets
US7321598B2 (en) 2002-07-15 2008-01-22 Hexago Inc. Method and apparatus for connecting IPv6 devices through an IPv4 network using a tunneling protocol
US20040013130A1 (en) * 2002-07-15 2004-01-22 Hexago Inc. Method and apparatus for connecting IPV6 devices through an IPV4 network using a tunneling protocol
US20050108412A1 (en) * 2002-09-03 2005-05-19 Mark Sjollema Data translation architecture
US20040044792A1 (en) * 2002-09-03 2004-03-04 Timberlake Holdings Data translation architecture
US20040260837A2 (en) * 2002-09-03 2004-12-23 Burnbag Ltd. Of Ireland Data Translation Architecture
US6826627B2 (en) 2002-09-03 2004-11-30 Burnbag, Ltd. Data transformation architecture
US7818449B2 (en) 2002-09-03 2010-10-19 Thomson Licensing Mechanism for providing quality of service in a network utilizing priority and reserved bandwidth protocols
US7472201B1 (en) * 2002-09-12 2008-12-30 Cisco Technology, Inc. Method and system for resolving domain name system queries in a multiprotocol communications network
US20060248202A1 (en) * 2002-11-01 2006-11-02 Hexago Inc. Method and apparatus for connecting ipv4 devices through an ipv6 network using a tunnel setup protocol
US20040088385A1 (en) * 2002-11-01 2004-05-06 Hexago Inc. Method and apparatus for connecting IPV4 devices through an IPV6 network using a tunnel setup protocol
US20040090958A1 (en) * 2002-11-13 2004-05-13 Park Chang-Min Method for transmitting and receiving packets to support internet handover service in wired and wireless combined network
US20040098484A1 (en) * 2002-11-19 2004-05-20 Wuebker Carl L. Method and system for communication between two devices by editing machine specific information at a proxy server
US7694018B2 (en) * 2002-11-19 2010-04-06 Hewlett-Packard Development Company, L.P. Method and system for communication between two devices by editing machine specific information at a proxy server
US20040107287A1 (en) * 2002-11-29 2004-06-03 Ananda Akkihebbal Lakshminarayana Method and apparatus for communicating on a communication network
US7231452B2 (en) * 2002-11-29 2007-06-12 National University Of Singapore Method and apparatus for communicating on a communication network
US7764686B1 (en) * 2002-12-19 2010-07-27 Cisco Technology, Inc. Migration to IPv6 using combination of globally significant and locally significant IPv4 addresses
US20040141513A1 (en) * 2003-01-10 2004-07-22 Ryuichi Takechi Address translation device
US7948916B2 (en) 2003-01-31 2011-05-24 Hewlett-Packard Development Company, L.P. Method and apparatus for discovering topology information in a network
US7424021B2 (en) 2003-01-31 2008-09-09 Hewlett-Packard Development Company, L.P. Method and apparatus for processing network topology data
US20040151128A1 (en) * 2003-01-31 2004-08-05 Wechter Gabriel Brandon Method and apparatus for processing network topology data
US20040151202A1 (en) * 2003-01-31 2004-08-05 Mandavilli Swamy J. Method and apparatus for discovering topology information in a network
US20040162909A1 (en) * 2003-02-18 2004-08-19 Byung-Gu Choe Apparatus for converting IPv4 to IPv6 using dual stack and method thereof
US7450499B2 (en) * 2003-02-21 2008-11-11 Samsung Electronics Co., Ltd. Method and apparatus for interconnecting IPv4 and IPv6 networks
US20040165602A1 (en) * 2003-02-21 2004-08-26 Samsung Electronics Co., Ltd. Method and apparatus for interconnecting IPv4 and IPv6 networks
US20040184465A1 (en) * 2003-03-19 2004-09-23 Samsung Electronics Co., Ltd. Mobile IP communication system using dual stack transition mechanism and method thereof
US20040246991A1 (en) * 2003-06-06 2004-12-09 Hitachi Communication Technologies, Ltd. IP address translator and packet transfer apparatus
US20060153228A1 (en) * 2003-06-30 2006-07-13 Stahl Thomas A Method and apparatus for mapping prioritized qos packets to parameterized qos channels and vice versa
US20050041596A1 (en) * 2003-07-07 2005-02-24 Matsushita Electric Industrial Co., Ltd. Relay device and server, and port forward setting method
GB2418117B (en) * 2003-07-07 2007-02-21 Matsushita Electric Ind Co Ltd Relay device and server, and port forward setting method
WO2005004417A2 (en) * 2003-07-07 2005-01-13 Matsushita Electric Industrial Co., Ltd. Relay device and server, and port forward setting method
GB2418117A (en) * 2003-07-07 2006-03-15 Matsushita Electric Ind Co Ltd Relay device and server, and port forward setting method
WO2005004417A3 (en) * 2003-07-07 2005-10-13 Matsushita Electric Ind Co Ltd Relay device and server, and port forward setting method
US7633948B2 (en) 2003-07-07 2009-12-15 Panasonic Corporation Relay device and server, and port forward setting method
US20050034131A1 (en) * 2003-08-07 2005-02-10 Deshpande Sachin G. Apparatus and methods for providing communication between systems having different protocol versions
US7340746B2 (en) * 2003-08-07 2008-03-04 Sharp Laboratories Of America, Inc. Apparatus and methods for providing communication between systems having different protocol versions
US20050066038A1 (en) * 2003-09-09 2005-03-24 Kenichi Sakamoto Session control system, communication terminal and servers
US7474675B2 (en) * 2003-09-25 2009-01-06 Samsung Electronics Co., Ltd. IP packet version converting apparatus and method
US20050068981A1 (en) * 2003-09-25 2005-03-31 Samsung Electronics Co., Ltd. IP packet version converting apparatus and method
US20050083969A1 (en) * 2003-10-15 2005-04-21 Joo-Chul Lee Communication method using mobile IPv6 in NAT-PT environment and storage medium thereof
US7680111B2 (en) * 2003-10-15 2010-03-16 Electronics And Telecommunications Research Institute Communication method using mobile IPv6 in NAT-PT environment and storage medium thereof
US8271620B2 (en) 2003-11-13 2012-09-18 Lantronix, Inc. Communication protocol converter and method of protocol conversion
US8924518B2 (en) 2003-11-13 2014-12-30 Lantronix, Inc. Communication protocol converter and method of protocol conversion
US8010789B2 (en) 2003-11-13 2011-08-30 Lantronix, Inc. Secure data transfer using an embedded system
US20090216895A1 (en) * 2003-11-13 2009-08-27 Lantronix, Inc. Communication protocol converter and method of protocol conversion
US8788814B2 (en) 2003-11-13 2014-07-22 Lantronix, Inc. Secure data transfer using an embedded system
US20050108524A1 (en) * 2003-11-13 2005-05-19 Witchey Nicholas J. Secure data transfer using an embedded system
US20110113246A1 (en) * 2003-11-13 2011-05-12 Lantronix, Inc. Secure data transfer using an embedded system
US20050108434A1 (en) * 2003-11-13 2005-05-19 Witchey Nicholas J. In-band firewall for an embedded system
US20050106941A1 (en) * 2003-11-13 2005-05-19 Witchey Nicholas J. Communication protocol converter and method of protocol conversion
US8606986B2 (en) * 2003-12-29 2013-12-10 Apple Inc. Methods and apparatus for bridged data transmission and protocol translation in a high-speed serialized data system
US20120236872A1 (en) * 2003-12-29 2012-09-20 Colin Whitby-Strevens Methods and apparatus for bridged data transmission and protocol translation in a high-speed serialized data system
US9460041B2 (en) 2003-12-29 2016-10-04 Apple Inc. Methods and apparatus for bridged data transmission and protocol translation in a high-speed serialized data system
US20050175016A1 (en) * 2004-02-06 2005-08-11 Samsung Electronics Co., Ltd. Method, medium, and apparatus for connecting heterogeneous protocol nodes
US20090063999A1 (en) * 2004-02-12 2009-03-05 Mark Gaug Graphical authoring and editing of mark-up language sequences
US7505457B2 (en) 2004-04-22 2009-03-17 Sony Computer Entertainment Inc. Method and apparatus for providing an interconnection network function
US20050238052A1 (en) * 2004-04-22 2005-10-27 Sony Computer Entertainment Inc. Method and apparatus for providing an interconnection network function
US20050276279A1 (en) * 2004-06-10 2005-12-15 Alcatel Network unit for exchanging protocol data units through tunnels
US20090144798A1 (en) * 2004-07-08 2009-06-04 Link Us All, L.L.C. Optimized peer-to-peer mobile communications
US8452976B2 (en) * 2004-07-08 2013-05-28 Link Us All, L.L.C. Optimized peer-to-peer mobile communications
US8724522B2 (en) 2004-08-24 2014-05-13 Comcast Cable Holdings, Llc Method and system for locating a voice over internet protocol (VoIP) device connected to a network
US9036626B2 (en) 2004-08-24 2015-05-19 Comcast Cable Holdings, Llc Method and system for locating a voice over internet protocol (VOIP) device connected to a network
US9648644B2 (en) 2004-08-24 2017-05-09 Comcast Cable Communications, Llc Determining a location of a device for calling via an access point
US7940746B2 (en) 2004-08-24 2011-05-10 Comcast Cable Holdings, Llc Method and system for locating a voice over internet protocol (VoIP) device connected to a network
US9049132B1 (en) 2004-08-24 2015-06-02 Comcast Cable Holdings, Llc Locating a voice over packet (VoP) device connected to a network
US9055550B1 (en) 2004-08-24 2015-06-09 Comcast Cable Holdings, Llc Locating a voice over packet (VoP) device connected to a network
US20060062248A1 (en) * 2004-09-23 2006-03-23 Nokia Corporation Providing connection between networks using different protocols
US8005093B2 (en) * 2004-09-23 2011-08-23 Nokia Corporation Providing connection between networks using different protocols
US20060067495A1 (en) * 2004-09-30 2006-03-30 Brother Kogyo Kabushiki Kaisha Information display device and information display program
US20060067336A1 (en) * 2004-09-30 2006-03-30 Brother Kogyo Kabushiki Kaisha Parameter setting system, device and parameter setting program
US8326952B2 (en) * 2004-09-30 2012-12-04 Brother Kogyo Kabushiki Kaisha Parameter setting system, device and parameter setting program
US20060092134A1 (en) * 2004-10-08 2006-05-04 Brother Kogyo Kabushiki Kaisha Device, method, system and program for setting management
US20060137011A1 (en) * 2004-12-16 2006-06-22 Kim Myung E System and method for coping with encrypted harmful traffic in hybrid IPv4/IPv6 networks
US7797741B2 (en) * 2004-12-16 2010-09-14 Electronics And Telecommunications Research Institute System and method for coping with encrypted harmful traffic in hybrid IPv4/IPv6 networks
US20060133373A1 (en) * 2004-12-20 2006-06-22 Sung-Chan Paik Network system and method for assigning dynamic address and performing routing based upon dynamic address
US7823062B2 (en) 2004-12-23 2010-10-26 Lockheed Martin Corporation Interactive electronic technical manual system with database insertion and retrieval
US20080120282A1 (en) * 2004-12-23 2008-05-22 Lockheed Martin Corporation Interactive electronic technical manual system with database insertion and retrieval
WO2006084957A1 (en) * 2005-02-14 2006-08-17 Teliasonera Ab Communication channel between at least two private networks
US8059551B2 (en) 2005-02-15 2011-11-15 Raytheon Bbn Technologies Corp. Method for source-spoofed IP packet traceback
US20060184690A1 (en) * 2005-02-15 2006-08-17 Bbn Technologies Corp. Method for source-spoofed IP packet traceback
EP1861940A2 (en) * 2005-03-21 2007-12-05 Cisco Technology, Inc. Method and system for automatically interconnecting ipv4 networks across an ipv6 network
EP1861940A4 (en) * 2005-03-21 2010-08-25 Cisco Tech Inc Method and system for automatically interconnecting ipv4 networks across an ipv6 network
US8194553B2 (en) * 2005-03-29 2012-06-05 International Business Machines Corporation Network system, traffic balancing method, network monitoring device and host
US20080273461A1 (en) * 2005-03-29 2008-11-06 International Business Machines Corporation Network system, traffic balancing method, network monitoring device and host
US20060256716A1 (en) * 2005-05-13 2006-11-16 Lockheed Martin Corporation Electronic communication control
US20060256717A1 (en) * 2005-05-13 2006-11-16 Lockheed Martin Corporation Electronic packet control system
US20060256770A1 (en) * 2005-05-13 2006-11-16 Lockheed Martin Corporation Interface for configuring ad hoc network packet control
US20060256814A1 (en) * 2005-05-13 2006-11-16 Lockheed Martin Corporation Ad hoc computer network
US7599289B2 (en) 2005-05-13 2009-10-06 Lockheed Martin Corporation Electronic communication control
US20090157900A1 (en) * 2005-05-25 2009-06-18 Yi Ge Method For Ipv4 Application Transition Over Ipv6 Networks
US8417831B2 (en) * 2005-05-25 2013-04-09 International Business Machines Corporation Method for IPv4 application transition over IPv6 networks
US8478869B2 (en) 2005-07-05 2013-07-02 Brother Kogyo Kabushiki Kaisha Information processing device and program
US20070011326A1 (en) * 2005-07-05 2007-01-11 Brother Kogyo Kabushiki Kaisha Information processing device and program
US8098662B2 (en) * 2006-06-07 2012-01-17 Qualcomm Incorporated Method and apparatus for using short addresses in a communication system
US8259702B2 (en) 2006-06-07 2012-09-04 Qualcomm Incorporated Efficient over the air address methods and apparatus
US20070286152A1 (en) * 2006-06-07 2007-12-13 Rajat Prakash Efficient over the air address methods and apparatus
US20070286151A1 (en) * 2006-06-07 2007-12-13 Rajat Prakash Method and apparatus used for airlink communications
US8416751B2 (en) 2006-06-07 2013-04-09 Qualcomm Incorporated Method and apparatus used for airlink communications
US20070286142A1 (en) * 2006-06-07 2007-12-13 Rajat Prakash Pn code based addressing methods and apparatus for airlink communications
US8134952B2 (en) 2006-06-07 2012-03-13 Qualcomm Incorporated PN code based addressing methods and apparatus for airlink communications
US20080008111A1 (en) * 2006-06-07 2008-01-10 Rajat Prakash Method and apparatus for using short addresses in a communication system
US20080052281A1 (en) * 2006-08-23 2008-02-28 Lockheed Martin Corporation Database insertion and retrieval system and method
US7933257B2 (en) * 2006-09-20 2011-04-26 Cisco Technology, Inc. Using QoS tunnels for TCP latency optimization
US20080069111A1 (en) * 2006-09-20 2008-03-20 Carl David Sutton Using QoS tunnels for TCP latency optimization
US20080080519A1 (en) * 2006-09-29 2008-04-03 Min Ho Park Protocol conversion apparatus and method between IPv4 terminal and IPv6 terminal or between application programs using mapping table, and method of generating mapping table of protocol conversion apparatus
US20080172493A1 (en) * 2007-01-11 2008-07-17 Ericsson, Inc. Method, system and host for telecommunications involving IPv4 and IPv6
US20090037595A1 (en) * 2007-07-31 2009-02-05 Sprint Communications Company L.P. Selecting and applying a communication version
EP2274655B1 (en) 2008-04-11 2015-08-05 Phoenix Contact GmbH & Co. KG Method, system and bus coupler for exchanging data between an overlay network and an underlay network
US8526467B2 (en) 2008-11-13 2013-09-03 Blue Coat Systems, Inc. Facilitating transition of network operations from IP version 4 to IP version 6
US20110182291A1 (en) * 2008-11-13 2011-07-28 Blue Coat Systems, Inc. Facilitating Transition of Network Operations from IP Version 4 to IP Version 6
US20100118869A1 (en) * 2008-11-13 2010-05-13 Blue Coat Systems Inc. Facilitating Transition of Network Operations from IP Version 4 to IP Version 6
US7924832B2 (en) * 2008-11-13 2011-04-12 Blue Coat Systems, Inc. Facilitating transition of network operations from IP version 4 to IP version 6
WO2010108431A1 (en) * 2009-03-26 2010-09-30 华为技术有限公司 Method for realizing ipv6 host visting ipv4 host, method for obtaining ipv6 address prefix and translation device
US8699515B2 (en) * 2009-07-21 2014-04-15 Cisco Technology, Inc. Limiting of network device resources responsive to IPv6 originating entity identification
US20110019677A1 (en) * 2009-07-21 2011-01-27 Cisco Technology, Inc., A Corporation Of California Limiting of Network Device Resources Responsive to IPv6 Originating Entity Identification
US20120257558A1 (en) * 2011-04-08 2012-10-11 The Regents Of The University Of Michigan Reducing energy consumption in wireless devices
US9197981B2 (en) 2011-04-08 2015-11-24 The Regents Of The University Of Michigan Coordination amongst heterogeneous wireless devices
US8861414B2 (en) * 2011-04-08 2014-10-14 The Regents Of The University Of Michigan Reducing energy consumption in wireless devices
FR2975852A1 (en) * 2011-05-24 2012-11-30 Airbus Operations Sas Method for addressing Internet protocol version 6 for on-board platform of fleet aircraft, involves assigning private Internet protocol address for on-board platform so that private address is used only within on-board network
US20130016719A1 (en) * 2011-07-11 2013-01-17 Oracle International Corporation System and method for supporting a scalable flooding mechanism in a middleware machine environment
US9332005B2 (en) 2011-07-11 2016-05-03 Oracle International Corporation System and method for providing switch based subnet management packet (SMP) traffic protection in a middleware machine environment
US9641350B2 (en) * 2011-07-11 2017-05-02 Oracle International Corporation System and method for supporting a scalable flooding mechanism in a middleware machine environment
US9634849B2 (en) * 2011-07-11 2017-04-25 Oracle International Corporation System and method for using a packet process proxy to support a flooding mechanism in a middleware machine environment
US9054886B2 (en) 2011-07-11 2015-06-09 Oracle International Corporation System and method for using a multicast group to support a flooding mechanism in a middleware machine environment
US20130016730A1 (en) * 2011-07-11 2013-01-17 Oracle International Corporation System and method for using a packet process proxy to support a flooding mechanism in a middleware machine environment
US8874742B2 (en) 2011-07-11 2014-10-28 Oracle International Corporation System and method for supporting virtual machine migration in a middleware machine environment
US9215083B2 (en) 2011-07-11 2015-12-15 Oracle International Corporation System and method for supporting direct packet forwarding in a middleware machine environment
US9461868B2 (en) * 2012-04-19 2016-10-04 Futurewei Technologies, Inc. System and apparatus for router advertisement options for configuring networks to support IPv6 to IPv4 multicast translation
US20130279518A1 (en) * 2012-04-19 2013-10-24 Futurewei Technologies, Inc. System and Apparatus for Router Advertisement Options for Configuring Networks to Support IPv6 to IPv4 Multicast Translation
US9407493B2 (en) 2012-04-19 2016-08-02 Futurewei Technologies, Inc. System and apparatus for router advertisement options for configuring networks to support multi-homed next hop routes
CN103441933A (en) * 2013-07-22 2013-12-11 汉柏科技有限公司 Method for achieving communication between IPV4 device and IPV6 device
US9521219B2 (en) * 2014-01-20 2016-12-13 Echelon Corporation Systems, methods, and apparatuses using common addressing
US20150207772A1 (en) * 2014-01-20 2015-07-23 Robert Walker Systems, Methods, and Apparatuses using Common Addressing
US9912637B2 (en) * 2014-09-30 2018-03-06 A 10 Networks, Incorporated Use of packet header extension for layer-3 direct server return
US20160094513A1 (en) * 2014-09-30 2016-03-31 A10 Networks, Incorporated Use of packet header extension for layer-3 direct server return
US20170250910A1 (en) * 2016-02-25 2017-08-31 Red Hat, Inc. Routing traffic between networks governed by different versions of the internet protocol

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